Here is the distinction I see between the left and the right. "We care about justice, the Constitution, and the proper application of law and due process." REGARDLESS of who the President is. There are those among us who voiced concern about both Obama and Biden policies - in foreign affairs and in immigration. But, here's another difference: Obama and Biden screwed up occasionally, but they tried to do the responsible thing. Trump screws up all of the time because he refuses to do the right thing.
Even his immigration emphasis could have been done in a responsible, expeditious manner, but neither he nor his underlings cared to do so. Indeed, they have universally looked at both efficacy and fairness and chosen, deliberately, to do the wrong thing. Trump has no interest in public policy - none whatsoever. He wants things done his way, and has never once felt constrained by rationality or the law. Moreover, his motivations are the basest possible = racism, sadism, xenophobia. He LIKES being cruel, and he attracts people of similar ilk - sociopaths and psychopaths without a shred of human decency or sense of shame.
What we have, in reality, is a pack of delinquents and sociopaths who will lie, cheat, steal (a lot of stealing), lie some more - just 'cause - and do the most antisocial thing possible. Against this are arrayed decent Americans who just want fairness, justice and good order. Those are the two sides, it's a simple as that: You're either a faithful American, or you're MAGA. There is no in-between.