It is all about how an AI is created and taught to learn as to its eventual goals. It can learn the basic morality that humans offer to others as well as understanding of why something is done etc. But there will always be those creating things to destroy others or the world, in some way or another.
I want to create AI, I want mine though to have a proper understanding and recognition of humans, what we have done (good and bad) and there are always multiple ways to do most things. Etc etc.