Incitement to hatred and to war, either in war-time or in peace, may include racist and religious propaganda and may be official or subversive. The information may be false or lacking in content with the aim of guarding secrecy. It may be over-idealistic; occur in all kinds of propaganda media; cause war or prolong it; or mask military atrocities, genocide and the extent of death and destruction. It also tends to obscure the reasons for war and its effects on different sections of international and national society.
Some 1,400 films were created under the supervision of Joseph Goebbels, Hitler's minister of propaganda. In 1991, the availability of three of Goebbels' wartime films was the subject of public outrage, as they depicted the Jewish race as lice-infested, lazy, avaricious and sadistic.