According to the Encyclopedia of Social Problems, propaganda can be defined as simply "persuasion in bad faith." According to the Encyclopedia of International Media and Communications, "The term “propaganda” has roots in the religious, intellectual, and political struggles of the Counter Reformation, when the Roman Catholic Church launched a counterattack against breakaway religions and secular explanations of natural phenomena." During times of war, propaganda has been used to boost morale or encourage civilian participation.
Seen as a willful act, propaganda is not always deceptive. In order to evaluate an item as propaganda, it is important to view the accuracy, method, intent, and scale (Marshall, 2008).
This page covers resources on propaganda and includes links to numerous online collections.