It’s divide and conquer. They break up the US into little tribes that all hate each other which makes them all easy to manipulate. This way politicians can do what they want while we all fight each other.
This is why I stand by the thought that we should look for common ground and hear each other out. We don’t have to agree but neither do we have to hate. But with that said you have some of those aforementioned tribes that are pretty much based on hate so that’s going to be a tough one to pull off.