In a desolate public park in Columbus, Ohio, a man responded to the advances of a topless woman. She asked him to "show me yours." When he did, police officers arrested him. Columbus law says her being topless is OK; exposing his genitalia is not. Why did cops hide in the shadows to arrest a man no one but they could see? On last week's "20/20", Dr. Marty Klein pointed out that the police weren't protecting children. "There were no children anywhere in sight. In fact, there were no adults anywhere in sight." Klein says it's part of "America's War...