It was reported somewhere (I'll find the link) that the fan said "Go back to Africa."
As a human being, I would have swung at him, regardless. For a anyone of any creed, color, race, religion, sex, etc. to flat out say that is wrong, if true.
Granted, the kid was in the heat of battle and people these days can't seem to control their own emotions or mouths, but man, if it has been me, the fan would have more than hand prints on his chest as a souvenir from the game.
No need for that at all. Ever!
Of course, I say that sitting here, 400 miles away and behind a computer screen too. Internet Tough Guy AM I! lol