Animal instinct still prevail

Look at the recent US election and you can still see racism around. Hearing reports that most of the black people still vote for their own skin color. Comments that they make further justify that too. No matter what human still have the instinct to stick with people of the same type. Even in the most developed country in the world. Seem like no matter how much progress we make, our animal instinct still prevail no matter how hard we try to hide it.