Half a million people are being generalized as rioters because store windows have been smashed. Like with most protests, the focus is quickly on those who are violent (and rightfully so), but we forget that the majority actually protests peacefully. If all of those 500.000 people were there to violently protest Trump's presidency, the military would have had to show up to defend the white house. Also, with how much Trump has talked about the elections being rigged, if he would have lost, there would have been protests (and riots) too. Maybe not as many people, but the atmosphere created by calling the elections rigged was vile. So to say republicans would not have protested the loss of Trump, or the win of Clinton is just naive.
Raskell, about that bottom line: if he does well, it will be a surprise contradicting the signs that he is giving at the moment. However, if he does wrong, then it is not a good thing to let him run unopposed for four years "because we gave him a chance". That's how the system works, no one has absolute power and there are checks and balances. The media who are now talking about the wrongdoings that the Trump administration is doing, are checking. Now congress needs to do the balancing. In between are the people, who are hearing the checks and now voicing their opinion about it, to make sure those balances will come. The people speak, and if Trump truly wants to give back politics to the people, he should listen.
But instead he is constantly undermining the checks, by saying the media are lying. And because he is insinuating that the media have some kind of vendetta against him, the media cannot be the checks anymore. At the same time, all common people have jobs and families and lives, they are too busy to investigate thoroughly what goes on, and thus cannot be the checks either. The only checks we then have is the speeches that Trump himself gives. However, checking yourself or your own side, is not a check, that's a farce. So then we end up with an unchecked government that can do whatever they want.
And don't say that congress can check, they are not independent from the government, as they are the government. Every congressman and woman has their own agenda, they all play the game of politics and therefore cannot speak the full truth, lest their game falls apart.
Edit: Sorry for the long posts, I try to make short points, but there is just too much nuance involved to make it short.