I only woke up a couple hours ago...
Seems a bit early to say what the motivation was- clearly it was a hate crime against Gays, but the motivations or ideology behind it remain to be seen... the alleged perpetrator is apparently Afghani, and so presumably muslim. So we can expect the usual characters slandering ALL muslims... And I am sure the Westboro Church will use it as a focus of their protests.
Terrorism or not, muslim americans will of course pay the price.