A Bit of an Overreaction

As I was walking to work I saw a guy in a nice suit running after a cab. It got stopped at a red light so he was able to catch it and he starts pounding on the window.
He's yelling "you better watch it, you almost ran me over, I'll fuckin kill you."
Then he walks in front of the cab and writes down its license and medallion number.
The light turns green but the cab can't go because this guy is standing right in front of it.
He finally steps out of the way, and the cab drives off. As it passes the guy, he spits on the window.
I bet he is a Syracuse alum.