I'm taking AP history this next school year. I didn't know that you meant cultural imperialism, but I still don't see how upholding the idea that murder is bad counts as cultural imperialism. Like, human societies unanimously view murder as a bad thing. Just because someone feels religiously motivated to murder someone doesn't make it cultural imperialism to condemn that. Why are you even defending this to begin with? Like, what's your aim here?
While I condemn stoning people as form of religious punishment, there are too many people in the world that believe that the rest of the world has respect them and be just like them. The Romans did it, the British did it, the Germans did it, the US did it, and all it did was bring death and hatred.
The Native Americans were almost wiped out because they were seen as inferior beings simply because of their simple, yet primitive life style. The Romans enslaved all those that they conquered, the children of the slaves would be indoctrinated into living as Romans. The Germans sterilized, killed, purged, imprisoned anyone who was not pure, was of a different ideology, or of a different race. The British turned the indigenous peoples in the lands the conquered into lower class servants or they would exterminate them if they resisted. Such events happened in Australia with the aborigionals and with the Native American's in Canada and the former American colonies.
When a culture is wiped out, you lose many things. You lose knowledge of science, knowledge of art and architecture, knowledge of farming, you lose a language, you lose old customs, mathematics, medical knowledge, history, ect.