Probably the guns. Americans are going to look at the broader issue here and think "Last time this happened for us we just shot at them until they left" and di

Probably the guns. Americans are going to look at the broader issue here and think "Last time this happened for us we just shot at them until they left" and disregarding the practicality of such notions, it's nevertheless baked into the collective consciousness and constitution. Tl;dr this is the one major situation where guns, as they exist in the US constitution, can be justified unequivocally.