They did not SUPPORT your thoughts. The protestant church here in america, was brought to the forefront by the KKK, all the church leaders were KKK.
The KKK, thought it had it right. They hated the jews, blacks and most minorities, and they did so on religious principles, not white ignorance.
Ever since the 1500's, christians have attempted to create a WHITE/ARYAN christian world, and ALL have failed miserably.
The KKK, was no different. Like Adolph Hitler, they too subscribed to the writings and teachings of Martin Luther, the FATHER of the Protestant Christian movement in the 1500's.
Hate for the jews has always been a RELIGIOUS position, and not ignorance.
Martin luther wrote hundreds of books, and one in particular, you will find connected to both Adolph Hitler, the KKK and the Protestant church in the USA.
"on the jews and their lies"
http://en.wikipedia.org/wiki/On_the_Jews_and_Their_Lies
Maybe you should research what a "christian" really is? how did it start? Who was behind it?
Then you could, maybe, understand where jewish hatred comes from.
TOS.