Gangsta Ball...
Not surprised.
Hilarious that so many people pipe in with comments as absurd as yours.
Point of fact: Most situations where beer is thrown at a player in any sport, you will find that player going after that fan. It's happened before and in other sports, like that gangsta sport hockey, for instance.
But they're nice, respectable, toothless white boys, so it's OK.
Would you assume that a 290 pound non-gangsta white guy would never respond to any insults and would meekly stand there doing nothing if some runt threw a beer at him?