The sad thing I have learned in my life is that human beings will reach for *any* tool at their disposal in serving as a means to justify their prejudices and their desire to exploit other human beings.
Whether it's science, religion, philosophy, political/economic theory (that goes just as much for capitalism as it does for its competitors among communism and socialism), or some other systematized perspective, they all can be bent to serve the maw of our desire to hate and exploit others.