I have been speaking from personal experience. If you wish to go back to Jericho and the like, I could include Jews.
But My personal experience with Jim Crow is mostly with Christians. In my lifetime, and in my personal experience, Jews, Unitarians and Quakers -- the most "liberal" of people who call themselvs religious -- have been the ones fighting for basic human rights.
Well then, just let me say that my personal experience departs considerably from yours (although I had not been principally relying on personal experience). From that we might draw the lesson that both of us should be a little careful about how sweeping a conclusion we might draw from our personal experience.