Why do Christians balk when someone points out that Hitler was a Christian?
Hitler was not a Christian, although he may have let his subjects believe he was in order to gain/maintain power.
He was, however, a vegetarian (to get back on-topic (sort of)).
(Disclaimer: I am not a Christian, but I am a vegetarian (vegan, in fact), just like Hitler.
However, I have no interest in genocide or invading Poland.)