I'll leave it to the sociologists to explain what causes discrimination. In order to eradicate discrimination whether it is caused by jealousy, envy or some other cause, it is necessary to first look at oneself. People who discriminate should carefully examine their motives and feelings about other people. Remember, it is not necessary to agree with one another, but we must love one another. One does not have to agree with that person's ideology, but we may not hate them either.
Discrimination is hateful.
It should be eliminated from our way of living and relating to other people.