The radical leftists are the new face of violence on the streets. If Biden wins there will be almost no unrest, perhaps the usual unrest caused by communists in liberal cities. I think Trump supporters will take it, even if they are unhappy, and be disappointed, but will not be looting and burning.
If Trump wins many liberals will completely lose their minds. They will completely be infuriated and disgusted at how Trump with so much going against him, including the media, social media giants, celebrities, polls, and everything was still able to pull it off.
If Trump wins it will be the greatest victory of democracy in recent times. Why? Because it will show that democracy still works. The will of the people still counts, even against all sorts of forces. It will be the will of the people over the will of the information machinery that sets the temperature of the country.
Yes, the next 4 years in many ways would be terrible. The liberal media will probably double down and the communists will double down, and accusations of racism and the "racializing" of everything will grow exponentially. Or maybe, just maybe the liberal establishment will finally realize that they need to come to the center if they want to win an election.