What is the implication of biases of psychological assessment among cultural minorities?

According to my understanding,Minorities are the group of people which are lower in number as compared to other group. Bias, according to me is a curse to developing and underdaveloped countries as they are more prone to it. as of my subjective perception. I think people should not be treated on the basis of their coulr caste or religion as we cannot decide someon's ability on the basis of these mere things which dont even matter. I think a person should be known by his ability, intelligency instead of his/ her beauty, colour, caste or religion. Taking the example of my class., most of the students in our class are known for their work for their capacity instead of their beauty or color. As its already mentioned Dont judge a book by its cover. Dont be so judgemental just due to color or caste., if you really want to judge someone., just try to know what actually is inside a person's heart. A person's heart and mind makes him an attractive personality rather than his looks or religion.