If the inevitable processes of natural selection continue to bring about improvement in life forms on earth through survival of the fittest, then why should we hinder this process by caring for those who are weak or less able to defend themselves? Should we not rather allow them to die without reproducing so that we might move toward a new, higher form of humanity, even a “master race?” In fact, Marx, Nietzsche, and Hitler all justified war on these grounds (Wayne Grudem and Jeff Purswell).