Defining propaganda has always been a problem. Garth Jowett and Victoria O'Donnell have provided a concise, workable definition of the term: "Propaganda is the deliberate, systematic attempt to shape perceptions, manipulate cognitions, and direct behavior to achieve a response that furthers the desired intent of the propagandist"  This definition focuses on the communicative process involved—more precisely, on the purpose of the process, and allows "propaganda" to be considered as a neutral activity, which can be seen as positive or negative behavior depending on the perspective of the viewer.
Propaganda is generally an appeal to emotion, not intellect. It shares techniques with advertising and public relations, each of which can be thought of as propaganda that promotes a commercial product or shapes the perception of an organization, person or brand, though in post-World War II usage the word "propaganda" more typically refers to political or nationalist uses of these techniques or to the promotion of a set of ideas, since the term had gained a pejorative meaning, which commercial and government entities could not accept. The refusal phenomenon was eventually to be seen in politics itself by the substitution of ‘political marketing’ and other designations for ‘political propaganda’.
Propaganda was often used to influence opinions and beliefs on religious issues, particularly during the split between the Roman Catholic Church and the Protestant churches. Propaganda has become more common in political contexts, in particular to refer to certain efforts sponsored by governments, political groups, but also often covert interests. In the early 20th century, propaganda was exemplified in the form of party slogans. Also in the early 20th century the term propaganda was used by the founders of the nascent public relations industry to describe their activities. This usage died out around the time of World War II, as the industry started to avoid the word, given the pejorative connotation it had acquired.
Literally translated from the Latin gerundive as "things that must be disseminated", in some cultures the term is neutral or even positive, while in others the term has acquired a strong negative connotation. The connotations of the term "propaganda" can also vary over time. For example, in Portuguese and some Spanish language speaking countries, particularly in the Southern Cone, the word "propaganda" usually refers to the most common manipulative media — "advertising".
In English, "propaganda" was originally a neutral term used to describe the dissemination of information in favor of any given cause. During the 20th century, however, the term acquired a thoroughly negative meaning in western countries, representing the intentional dissemination of often false, but certainly "compelling" claims to support or justify political actions or ideologies. This redefinition arose because both the Soviet Union and Germany's government under Hitler admitted explicitly to using propaganda favoring, respectively, communism and Nazism, in all forms of public expression. As these ideologies were repugnant to liberal western societies, the negative feelings toward them came to be projected into the word "propaganda" itself.
Propaganda is neutrally defined as a systematic form of purposeful persuasion that attempts to influence the emotions, attitudes, opinions, and actions of specified target audiences for ideological, political or commercial purposes through the controlled transmission of one-sided messages (which may or may not be factual) via mass and direct media channels. A propaganda organization employs propagandists who engage in propagandism—the applied creation and distribution of such forms of persuasion."
—Richard Alan Nelson, A Chronology and Glossary of Propaganda in the United States, 1996
Roderick Hindery argues that propaganda exists on the political left, and right, and in mainstream centrist parties. Hindery further argues that debates about most social issues can be productively revisited in the context of asking "what is or is not propaganda?" Not to be overlooked is the link between propaganda, indoctrination, and terrorism/counterterrorism. He argues that threats to destroy are often as socially disruptive as physical devastation itself.
Propaganda also has much in common with public information campaigns by governments, which are intended to encourage or discourage certain forms of behavior (such as wearing seat belts, not smoking, not littering and so forth). Again, the emphasis is more political in propaganda. Propaganda can take the form of leaflets, posters, TV and radio broadcasts and can also extend to any other medium. In the case of the United States, there is also an important legal (imposed by law) distinction between advertising (a type of overt propaganda) and what the Government Accountability Office (GAO), an arm of the United States Congress, refers to as "covert propaganda."
Journalistic theory generally holds that news items should be objective, giving the reader an accurate background and analysis of the subject at hand. On the other hand, advertisements evolved from the traditional commercial advertisements to include also a new type in the form of paid articles or broadcasts disguised as news. These generally present an issue in a very subjective and often misleading light, primarily meant to persuade rather than inform. Normally they use only subtle propaganda techniques and not the more obvious ones used in traditional commercial advertisements. If the reader believes that a paid advertisement is in fact a news item, the message the advertiser is trying to communicate will be more easily "believed" or "internalized."
Such advertisements are considered obvious examples of "covert" propaganda because they take on the appearance of objective information rather than the appearance of propaganda, which is misleading. Federal law specifically mandates that any advertisement appearing in the format of a news item must state that the item is in fact a paid advertisement.
The propagandist seeks to change the way people understand an issue or situation for the purpose of changing their actions and expectations in ways that are desirable to the interest group. Propaganda, in this sense, serves as a corollary to censorship in which the same purpose is achieved, not by filling people's minds with approved information, but by preventing people from being confronted with opposing points of view. What sets propaganda apart from other forms of advocacy is the willingness of the propagandist to change people's understanding through deception and confusion rather than persuasion and understanding. The leaders of an organization know the information to be one sided or untrue, but this may not be true for the rank and file members who help to disseminate the propaganda.
More in line with the religious roots of the term, it is also used widely in the debates about new religious movements (NRMs), both by people who defend them and by people who oppose them. The latter pejoratively call these NRMs cults. Anti-cult activists and countercult activists accuse the leaders of what they consider cults of using propaganda extensively to recruit followers and keep them. Some social scientists, such as the late Jeffrey Hadden, and CESNUR affiliated scholars accuse ex-members of "cults" who became vocal critics and the anti-cult movement of making these unusual religious movements look bad without sufficient reasons.
Propaganda is a powerful weapon in war; it is used to dehumanize and create hatred toward a supposed enemy, either internal or external, by creating a false image in the mind. This can be done by using derogatory or racist terms, avoiding some words or by making allegations of enemy atrocities. Most propaganda wars require the home population to feel the enemy has inflicted an injustice, which may be fictitious or may be based on facts. The home population must also decide that the cause of their nation is just.
Propaganda is also one of the methods used in psychological warfare, which may also involve false flag operations. The term propaganda may also refer to false information meant to reinforce the mindsets of people who already believe as the propagandist wishes. The assumption is that, if people believe something false, they will constantly be assailed by doubts. Since these doubts are unpleasant (see cognitive dissonance), people will be eager to have them extinguished, and are therefore receptive to the reassurances of those in power. For this reason propaganda is often addressed to people who are already sympathetic to the agenda. process of reinforcement uses an individual's predisposition to self-select "agreeable" information sources as a mechanism for maintaining control.
Propaganda can be classified according to the source and nature of the message. White propaganda generally comes from an openly identified source, and is characterized by gentler methods of persuasion, such as standard public relations techniques and one-sided presentation of an argument. Black propaganda is identified as being from one source, but is in fact from another. This is most commonly to disguise the true origins of the propaganda, be it from an enemy country or from an organization with a negative public image. Grey propaganda is propaganda without any identifiable source or author. A major application of grey propaganda is making enemies believe falsehoods using straw arguments: As phase one, to make someone believe "A", one releases as grey propaganda "B", the opposite of "A". In phase two, "B" is discredited using some strawman. The enemy will then assume "A" to be true.
In scale, these different types of propaganda can also be defined by the potential of true and correct information to compete with the propaganda. For example, opposition to white propaganda is often readily found and may slightly discredit the propaganda source. Opposition to grey propaganda, when revealed (often by an inside source), may create some level of public outcry. Opposition to black propaganda is often unavailable and may be dangerous to reveal, because public cognizance of black propaganda tactics and sources would undermine or backfire the very campaign the black propagandist supported.
Propaganda may be administered in insidious ways. For instance, disparaging disinformation about the history of certain groups or foreign countries may be encouraged or tolerated in the educational system. Since few people actually double-check what they learn at school, such disinformation will be repeated by journalists as well as parents, thus reinforcing the idea that the disinformation item is really a "well-known fact", even though no one repeating the myth is able to point to an authoritative source. The disinformation is then recycled in the media and in the educational system, without the need for direct governmental intervention on the media. Such permeating propaganda may be used for political goals: by giving citizens a false impression of the quality or policies of their country, they may be incited to reject certain proposals or certain remarks or ignore the experience of others. See also: black propaganda, marketing, advertising.
See also: Doublespeak, Cult of personality, Spin (politics), Demonization, and Factoid
Common media for transmitting propaganda messages include news reports, government reports, historical revision, junk science, books, leaflets, movies, radio, television, and posters. Less common nowadays are letterpost envelopes examples of which of survive from the time of the American Civil War.(Connecticut Historical Society;Civil War Collections;Covers(envelopes). (In principle any thing that appears on a poster can be produced on a reduced scale on a pocket-style envelope with corresponding proportions to the poster). The case of radio and television, propaganda can exist on news, current-affairs or talk-show segments, as advertising or public-service announce "spots" or as long-running advertorials. Propaganda campaigns often follow a strategic transmission pattern to indoctrinate the target group. This may begin with a simple transmission such as a leaflet dropped from a plane or an advertisement. Generally these messages will contain directions on how to obtain more information, via a web site, hot line, radio program, et cetera (as it is seen also for selling purposes among other goals). The strategy intends to initiate the individual from information recipient to information seeker through reinforcement, and then from information seeker to opinion leader through indoctrination.
A number of techniques based in social psychological research are used to generate propaganda. Many of these same techniques can be found under logical fallacies, since propagandists use arguments that, while sometimes convincing, are not necessarily valid.
Some time has been spent analyzing the means by which the propaganda messages are transmitted. That work is important but it is clear that information dissemination strategies become propaganda strategies only when coupled with propagandistic messages. Identifying these messages is a necessary prerequisite to study the methods by which those messages are spread. Below are a number of techniques for generating propaganda:
A Latin phrase that has come to mean attacking your opponent, as opposed to attacking their arguments.
This argument approach uses tireless repetition of an idea. An idea, especially a simple slogan, that is repeated enough times, may begin to be taken as the truth. This approach works best when media sources are limited and controlled by the propagator.
Appeal to authority
Appeals to authority cite prominent figures to support a position, idea, argument, or course of action.
Appeal to fear
Appeals to fear seek to build support by instilling anxieties and panic in the general population, for example, Joseph Goebbels exploited Theodore Kaufman's Germany Must Perish! to claim that the Allies sought the extermination of the German people.
Appeal to prejudice
Using loaded or emotive terms to attach value or moral goodness to believing the proposition. Used in biased or misleading ways.
Bandwagon and "inevitable-victory" appeals attempt to persuade the target audience to join in and take the course of action that "everyone else is taking."
The type of propaganda that deals with famous people or depicts attractive, happy people. This makes other people think that if they buy a product or follow a certain ideology, they too will be happy or successful.
The repeated articulation of a complex of events that justify subsequent action. The descriptions of these events have elements of truth, and the "big lie" generalizations merge and eventually supplant the public's accurate perception of the underlying events. After World War I the German Stab in the back explanation of the cause of their defeat became a justification for Nazi re-militarization and revanchist aggression.
Presenting only two choices, with the product or idea being propagated as the better choice. (e.g., George W. Bush "Either you are with us or against us.")
The "'plain folks'" Making individuals from the opposing nation, from a different ethnic group, or
those who support the opposing viewpoint appear to be subhuman (e.g., the
Vietnam War-era term "gooks" for National Front for the Liberation of South
Vietnam aka Vietcong, (or 'VC') soldiers), worthless, or immoral, through
suggestion or false accusations.
Making individuals from the opposing nation, from a different ethnic group, or those who support the opposing viewpoint appear to be subhuman (e.g., the Vietnam War-era term "gooks" for National Front for the Liberation of South Vietnam aka Vietcong, (or 'VC') soldiers), worthless, or immoral, through suggestion or false accusations.