DID 
YOU KNOW that a lot of people who have racism and sexism issues, or 
other bigotry or us vs. them issues such as "hating" anyone who doesn't 
have the same beliefs or political views, are just trying to make 
themselves appear TOUGH and "BAD-ASS"? When a person keeps trying to 
display hostility, they are trying to show dominance. Chimpanzees do 
this all the time but don't try to hide it. Humans do
 it all the time and try to rationalize that they're doing something 
else. It's exactly the same display, but humans have a couple more tools
 such as language and machinery that makes loud noises or are big and 
dangerous, and also of course sophisticated weapons. Chimps mostly use 
vocalizations and their bodies, sometimes sticks or rocks.