Seems to me that you are doing the twisting of facts.
Dresden and Tokyo bombing during WWII? It was a war.
Firebombing innocent citizens is OK with you? In that case, you should not have had any outrage about 9/11 when the guns were turned on us; after all, Dubya told us it was a war against our freedoms.
Slavery. Bad thing that everyone did and we eventually fought to get rid of.
Way to casually brush off enslaving a race of people.
Natives. We beat them.
They weren't a threat to us, well except for the pesty business of taking up land that rich white folks needed so they could enslave a different race.
As usual, you never fail to show your disregard for other human beings who are a different color than you.