Across the parking lot from a YMCA in Des Moines, about a dozen men sit on black plastic chairs in the basement of a former Catholic high school. This is a court-ordered class for domestic abusers, part of a new statewide curriculum for batterer intervention in Iowa. According to police reports, one man here kicked his wife several times in the stomach. Another threw a lamp at his girlfriend's head. Lucas Sampson - a man with the imposing appearance of a viking but the gentle demeanor of...