Some people claim that human beings can be divided into races on the basis of physical characteristics like skin colour, and racism is the theory that one group of people, identified in this way as a “race”, is superior to another. Racism results in hostility towards the group thought of as inferior, the practice of discrimination and persecution, and in some cases it has led to genocide.

Despite the fact that there is no evidence to support racism it continues to cause suffering for those who are its victims. Today, as in the past, different ideas and theories have been used to support racism, and different groups have been singled out as the victims of racist oppression.