Did you read the rest of my post? I think that I've clarified lots of the examples that you are keeping on mentioning them just to prove that you have lots of information regarding that issue. Even though, I'll keep on with you.
Jews, if you mean the holocaust, so you are talking about another well exaggerated myth. I know that the Nazi holocaust existed but to say that there were 5 millions Jews killed in it, this is the myth. What is more, this event was unique in the ancient and modern history, I mean for a person to loathe a specific group of people and trying to excute them all, it was weird. Hitler isn't a clear example to talk about especially here. Furthermore, this isn't the question really? Did you even ask yourself before about the real causes behind such loath? Did you read Hitler's own diary? If you read, I think that you can answer me, however, I'm against any sort of racial or ethnic discrimination.
Excuse me, who told you that Shites and Sunnis killed themselves, it is just laughable to talk genearlly without mentioning a specific event. The point here is that they are different explanations and how to apply them. And if there was some past clashes, so these had to be some closed minded greedy leaders (Sorry for talking generally).
Ironically, you are looking at a religion, whatever this religion is, as being a strict law that you can't even be discussed. To look at a certain point in any religion thinking that this is the point on which this religion was built and to start hating it just for misunderstandings, which haven't any roots, is just ridiculous.