Post-modern moral relativism has also made its way to the Supreme Court. I am the law. First, how you view others and, second, how you view yourself. How you view others under the Eric Harris model of the world is that people have no inherent dignity. You re simply another animal that evolved.
Life is about survival of the fittest.
People are there to please you. The fruit of this view of your neighbor is indifference to the plight of others, rudeness towards others, and a lack of manners. Look around and ask yourself and your parents how many times you see the lack of manners in our society. Lack of manners means lack of respect for others. Lack of courtesy is one of the more mild fruits of this worldview.