Martin Luther hated the Jews because they killed his Jesus who was also a Jew. Figure that one out. Also, Martin Luther was known to fart at the devil. He would say "here, devil, I blow you a little kiss." (I'm not making this up.)
Now let's go into anger at anyone killing Jesus. The simple fact is that you have no Christian religion if Jesus remains alive. None. Being "saved" also involves the shedding of blood which is why Jesus had to die. Don't worry. It was just for a weekend.
The only thing churches are better at than hating is rewriting their own histories.