During wartime, all forms of mass media fear being under fire from the government for its depictions of the conflict (or even lack thereof). In many cases, entertainment franchises are enlisted to help build support for the war effort. Movies, games, and music are produced with the intent to boost morale at home and on the battlefield. Any depictions that do not align with this are often censored under the guise that they are promoting violence and opposition.
The most prominent examples of this come from World War II. The Office of War Information both produced and controlled mediums of entertainment. They banned showings of films that featured gang violence, believing that the movies would paint the war in a negative light. The OWI also vetted and provided input on scripts for films before they could be used.¹
The OWI also established Voice of America in 1942, which provided government-approved music, news, and commentary¹ — most of which would promote the war effort. Below is an example of some of the work that the OWI did for WWII.
¹ Video Lesson Week 11