Other than social programs I bet most people on the PC agree on a lot of things politically.
But once Obama became president it was suddenly racist to disagree with the president and once Trump became president it's like actual policy issue discussions ceased being relevant. Now it's all about complaining every little thing Trump does or doesn't do and all about separating people into as many groups as possible so Democrats can claim to be their champions.
Just look at the supreme court pick fiasco. I haven't heard a single thing about why he wouldn't make a good supreme court judge, instead it's all about complaining about he bought baseball tickets and some vague omen that he is going to strip women of all of their rights.