First of all, terrorism has no universal definition.
But as we are talking about an American case here, let's see the federal definition of terrorism:
"Domestic terrorism" means activities with the following three characteristics:
- Involve acts dangerous to human life that violate federal or state law;
- Appear intended (i) to intimidate or coerce a civilian population; (ii) to influence the policy of a government by intimidation or coercion; or (iii) to affect the conduct of a government by mass destruction, assassination. or kidnapping; and
- Occur primarily within the territorial jurisdiction of the U.S.
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It still seems like a hate crime to me.