I haven't gotten a degree yet, so I have to go back to school for some classes. The core curriculum classes changed since the last time I stepped foot on a campus, so I'm having to take some classes that weren't required a few years ago, one of them is a second history class.
Today the discussion was on Jim Crow laws and segregation. The professor makes a point to say that racism isn't natural, that it's something that is taught... I'm pretty sure this is wrong. I'm pretty sure it's encoded somewhere in our DNA. Even animals of the same species prefer those who have the same coat of fur or same feathers. Tribalism is how humans have been able to survive for thousands of years.
Racism isn't taught. Being ignorant of the dangers of other races is taught though.