There's a great movie, called "Man on the Train", that I always remember because of a scene where a school teacher and a gangster are in a cafe and they get hassled by a coupe of local punks. The gangster, who is - by cinematic standards - a total, murderous bad-ass, does nothing as they get taunted by a couple of local hoodlums. Afterwards, the schoolteacher is confused and asked the gangster why he didn't react to the couple of punk kids who were bothering them - he says something like "one guy can't take on two, except in the movies."