The Knights Templar were a christian organized group during the holy crusades. They were funded by christians and fought for christians. It turns out that they were also betrayed by the pope and the king of france at that time which lead many of them to burn at the stake. Now, how would you feel if you fought for your religion and then your own religion decided to kill you?So how bad are christian really.
As for the "self-hating jews" remark that doesn't even make sense. You speak about judaism like it is a race when it is not, it is a religion. Just because you are born into a jewish family doesn't not mean you automatically become jewish. I was born and raised in a roman catholic family and i am agnostic. It is my decision not my parents.