Why is the PTC worried about the make-believe sex and violence on prime time, since it has no influence on real-life behavior or attitudes?
There are numerous instances where the media clearly does influence behavior. Another way is through desensitization. A person who regularly views positive portrayals of adultery and fornication or heroes using violence is less apt to view those behaviors as undesirable or abnormal. Finally, television can influence through its focus on extreme and dangerous behavior, both in news and entertainment. The Columbine killers Eric Harris and Dylan Klebold, for instance, were apparently motivated, at least in part, by the prospect of being the subjects of a television movie.
If you don't like something on television, why don't you just change the channel? "You can put your TV in the garage, avoid movies altogether, and use earplugs to spare your hearing from the sounds of hip-hop or heavy metal, but these forms of entertainment will still change your life through their influence on everyone else in society. Though you may struggle to protect your own kids from music that encourages violence or drugs or irresponsible sex, you can't possibly protect them from all the other kids in your community who have received full exposure." - Michael Medved taken from The Rock & Roll Rebellion by Mark Joseph.