So did Hitler, Mao and Stalin. As we've learned from less than six months of Zero, "change" is just as likely to be bad as good.
I can think of actual changes that have come about as a result of the twisted lives of Hitler, Mao, and Stalin.
For the life of me, I can’t think of one single change wrought in this world by Michael Jackson. (Mundane things like “he built a house that wasn’t there” don’t count.)