You fuckers do that mostly overseas and call it "that school was definitely an evil lair full of satan and aids"
Here you have a full wikipedia page of them https://en.wikipedia.org/wiki/Category:Massacres_committed_by_the_United_States
It is by no means full.
Internally, on your own soil, you do have few famous ones I can name from memory like Tulsa and Orangeburg, and I am too disgusted to even try to google it and find more.
To be fair (so I don't shit on USA only in this message), I can name 1 French massacre from the 60s against Algerian protesters and it was over 200 dead.
I don't think we had any more in the EU, but I'm willing to be schooled.