Ok its more like 76% confirmed have a christian basis and many are unconfirmed, keep in mind that the kkk has a christian basis as well as neo-nazis, also that by christian I mean christianity in general which includes protestantism, presbyterianism, lutheran, and all of the rest of the christian denomianations. I could have included all abrahamic religions, but I think christians are the worst. And I don't mean to say that you yourself are hateful as many many christians are not, but in general christians make up a lot of hate groups.
http://www.cvtc-slr.org/survivors_factsheet_31.html