Although research has not established a causative link between media violence and violent offenses, many researchers are convinced that excessive media violence increases the chances that at least some viewers will behave more violently. Based on various national commission reports on pornography, nonviolent pornographic videos are less of a threat to society than are videos containing depictions of aggression and violence. Neither has a direct link been established between sexually violent material and aggression, but there is enough evidence to consider such material to be as harmful as other violent media depictions. Sexually violent material should be clearly distinguished from nonviolent sexual material in any policy debate or legislative action. A clear identification of sexually violent material could promote more efficient monitoring, regulation, and reduction of such material. 2 figures and 22 notes.