I keep seeing people saying that massacring native Americans (and now Palestinians) was a good thing because they brought democracy to America and I'm thinking....good for who? You killed the people living there, and if we needed to live in a democratic country so bad we could've stayed home, killed the people back home and made our democracy there instead; so who was it in aid of? The soil?

That phrasing has always been weird to me, the idea that this or that evil act was good because we/they brought democracy/whatever else to the region; who was the benefactor here? Who was it good for?

This is like a sentient parasite talking about how they brought high birth rates and fully fed populaces to wherever they've propagated to; high birth rates and fully fed populaces of whom?

Kind of hard to argue the moral point when you're the benefactor of your own evil.