Subway gropers are an unfortunate fact of life in every country with a tube. Regardless of race, creed, or religion, if a country has mass transit then it has grabby pervs looking to get a handful of some random person. But that doesn't mean you have to take it. When it comes to the issue of public groping, I'm a firm believer in street justice because well, you're a busy person and you just don't have the time to alert a police officer or a transit employee.
On the subway grope scale of 1 to 10, with 1 being a seemingly unintentional — but probably intentional — hand on a leg, and a 10 being a full handful of breast, this guy's offense was a 2. But no matter. He had what was coming to him — a rich-sounding smack on the head, with his own hat no less.