Yesterday's post on the masturbating gentleman of the Brooklyn-bound 4 train provoked debate between people who hate perverts, people who hate people who hate perverts, and a pervert who defended his right to rub one out in public.

Riding a Brooklyn-bound 4 train, amateur photographer Kate Black noticed a man "pitching a tent" and "thrusting his hips" in ladies' faces. Thinking quickly, Kate photographed him, then declared a jihad against the pervert on her Flickr page.