Wikipedia says:
“John Bruce “Jack” Thompson (born July 25, 1951) is an American attorney and activist against obscenity and violence in media and entertainment, based in Coral Gables, Florida. Thompson describes himself as a Christian conservative and a Republican.[1]

After an initial foray into politics, Thompson concentrated his efforts on activism against obscenity, particularly obscenity in rap music and broadcasts by radio personality Howard Stern. More recently, he has focused on violence as well, particularly in the content of computer and video games and their alleged effects on children.”