A culture of respect, based on the idea that all people are created in the image of God is better than a culture of fear, disgust, and superiority. Even if you don’t believe in God, it’s useful to treat people as though they’re equal in the eyes of a creator.
The opposite sometimes leads to Social Darwinism. Which doesn’t just apply to race. It applies to class, body-weight, perceived intelligence, and other things that differentiate people. This type of thinking even exists in religion, when certain religious beliefs are exclusionary ie; “if you don’t believe what I believe, you’re going to hell.”