Racism

Racism is a belief in the moral or biological superiority of one race or ethnic group over another or others. The term racism is also sometimes used to refer to preference for one's own ethnic group, fear of difference, views or preferences against interbreeding of the races, and nationalism, regardless of any explicit belief in superiority or inferiority. Related concepts include prejudice, discrimination and racialism.

Racism has been used to justify social discrimination, racial segregation and violence, including genocide.

1a- a belief in the superiority of a particular race; prejudice based on this

b- Antagonism towards other races, esp. as a result of this

2- the theory that human abilities etc. are determined by race.