The sad thing is that a lot of those protesters are probably very loyal Americans who are worried about the future, Trump knows this and plays on it.
Trump is a symptom and not the cause of Americas problems.
What gets me, and yes I know this is a simplistic rose-tinted view, is what a shame it is to achieve a position of power to then not use it positively. No this would never have happened cause it's not his makeup, however Trump
could have used his term to promote inclusion, equality, fairness, collaboration. Instead he went down the isolationist maga / US first route, peddling division, stoking hatred, literally building a massive border wall, denouncing anything and everything not in his favour as fake news, anyone who countered him labeled a traitor. All the 'drain the swamp' rhetoric, him and his associates have been neck high in various swamps for decades.
He's deluded and, at this stage, dangerous. Apparently, through another person's Twitter account, he's tweeted along the lines of 'a great 1st term comes to an end' or something to that effect. He is genuinely incapable of acknowledging any form of self-negativity. You could imagine him standing in quicksand, slowly sinking but saying 'I'm fine, I'm the greatest, you know it, there's no quicksand that can sink me, none on this planet, none in the universe, I'm completely indestruct ...' (glug glug glug)