Pennington

This is somewhat true, Hilter thought that he was doing humanity good by getting rid of tha parasitic races and some neo nazis today feel that he was morally right in killing millions of people. People that they see as less than human. That's the key though, they see them as less than human, and therefore aren't considered when maximizing utility. We know that what he did was wrong and evil, but some future society might see our killing of animals and fetuses as horrible and unforgivable acts against civilization. But to talk about what is "right" and "wrong" we have to be able to look at it objectivly and utilitarinism is the best system to do so, in my opinion.