Television is an integral part of the lives of American families. An average American household has the television set turned on 8 hours and 11 minutes daily, and children watch on average between two and four hours of television every day. Depending on their age, one to two thirds of children have televisions in their bedrooms. By the time most children begin the first grade, they will have spent the equivalent of three school years in front of the television set. Violent content in television programming has been a matter of private and governmental concern and discussion almost from the beginning of television broadcasting. A broad range of television programming aired today contains such content, including, for example, cartoons, dramatic series, professional sports such as boxing, news coverage, and nature programs. The public is concerned about the amount of violent television programming available to children, with many urging action to restrict such content.