-84% christian state
-Boy lives with grandmother
-Elderly people are far more religious than younger americans
-Shouting homophobic slurs
Yeah, the evidence for Christian hate-crime sure is weak here.

Yep. The assumption is strong with this one. Even if your stats are correct (and you might want to double check your math there because all of those percentages add up to 106%) then that still leaves plenty of room for this kid to not be a Christian. And I shudder to think that the kid could possibly even be an atheist! But I guess only in your narrow, hate-filled mind that atheists just aren't capable of such a thing.