Racism might relate to either: 1. The belief that all members of each race possess characteristics, abilities, or qualities specific to that race, especially so as to distinguish it as inferior or superior to another race or races. 2. Prejudice, discrimination, or antagonism directed against someone of a different race based on the belief that one's own race is superior.
Racism might relate to either:
The belief that all members of each race possess characteristics, abilities, or qualities specific to that race, especially so as to distinguish it as inferior or superior to another race or races.
Prejudice, discrimination, or antagonism directed against someone of a different race based on the belief that one's own race is superior.
For more information on the history of racism see the Wikipedia page