I find the answer to this is Childish Gambino's new song "This is America" where he outlines current racismin our country. But the real answer is that racism came from slavery. After that Jim Crow laws were enacted, where they made African Americans look really bad, like animals almost. Jim Crow was a law started in the south, which is also where they wanted to keep their slaves during the revolutionary war. They fought the North to keep slaves.