What are some examples of media censorship?

In authoritarian countries, creators of artworks may remove material that their government might find controversial for fear of sanction by their governments. In democratic countries, self-censorship can also occur, particularly to be more politically correct or if there is a time of crisis. News media are often accused of self-censorship because news media can face serious backlash for controversial or hasty reporting; therefore, news media have been accused of not "taking any risks." For example, certain organizations (Media Matters for America, FAIR, Democracy Now!, and the ACLU) have raised concerns about news broadcasting stations (notably FOX News) censoring their own content to be less controversial when reporting on the War on Terror. Though, this is not always attributed to self-censorship; there have been attempts by the authorities to pressure news organizations to withhold particular public information in the name of security . There have also been instances, beginning with the Gulf War and in subsequent conflicts, where journalists have actively sought censorship advice from military authorities in order to prevent the inadvertent revelation of military secrets.