Feigning superiority over another person and then gather a following of others as justification for doing so. A weapon of mass destruction that has killed more people than all the wars combined.
The racist said to another racist:
"I hate you because you have blue eyes" and 50 people with blue eyes were hung.
The other racist said:
"I hate you because you have black hair" and 50 people with black hair were hung.
The third racist said:
"Wtf you guys are white, you should die then" and 100 white people were hung.
Later, all the racists were hung for crimes against humanity.