Faith Refuses Bigotry

How should a Catholic view other people? As those made in the image of God, which is why bigotry has no place in faith. Can you really have faith and be a racist, for example? It's a serious question. I know people who say they have strong faith and who are racists. It bothers me. How can you say you follow God when you refuse to see other people as made in the image of God? Why is the amount of melanin in a person's skin an issue? Then there's sexism. Do people forget the "there is neither male nor female" line? Or do they just twist the rest of St Paul's teachings to make it fit their worldview? All the "isms" of life are nothing but excuses for hatred. It's a denial of the humanity of others. It's ridiculous, and it has no reason to be in a person of faith. You can't love God as you should when you're busy hating other human beings. It makes no sense.