He punched a woman... what a tough-guy.
Seriously though, as a lawyer, he should know better, but as a former cop, I'm sure he can't resist. He's a bully, which is why he probably became a cop in the first place.
If I ever saw this guy on a train, I'd get in his face for being a jerkass, and if he assaulted me, it'd be ON.
List of his offenses: http://www.newsday.com/news/local/longisland/ny-liside1016,0,7551758.story