I'm afraid that the replacement of normal class politics by competition between group on grounds of 'race', gender, sexual bias and whatever leaves the least educated amongst Americans taught to believe themselves superior so hugely threatened that they would accept any evil as long as they supposed it to be 'theirs'. Giving normal human respect to any minority group is inevitably seen as being put down by those who have fantasised that they are somehow 'masters': if anyone else is treated decently, it reduces the master-race, it seems. I do hope Mr Biden succeeds in showing them how to treat other people with decent respect so as to deserve the same treatment from others and all move forward to a human world. It fascinates me (in a depressed kind of way) that Trump supporters on here simply can't argue. All they do is insult opponent's 'group' in some vacuous way. Sometimes I respond with something similar, but the exchange always grows so tedious that I have to put 'em on 'Ignore' or die of boredom!
Plenty of conservatives can debate. Most wouldn't bother to debate with you, however, for reasons that are specific to your attitude.