I recall asking pretty much the same thing when the "incident" in Wichita was reported a while back.
One thing to consider, though, is that violent racists are not looking for a "fair fight;" they are looking for prey. Thay's why these subhumans didn't crash a frat party. That's why they don't cause trouble at St. Patrick's Day (or von Steuben) parades.
These thugs instinctinvely know which "white boys" NOT to mess with.
I must confess that I myself have never had any racial conflict with any minority other than African-American males...never. I speak Spanish and spent a large chunk of my adult life in Latin America.
It's just a shame that white middle class kids seem to be impotent with regards to such simple instincts as self preservation. It wasn't that way when I was a boy.