If actual violence happens every now and then, that gives proof that the implicit threat is actually real. I think before this happened, politicians believed that conservatives were too committed to law and order to pose any real threat. Maybe now, instead of just cowing to the left's demands out of fear, decisions will be more balanced and they will weigh the potential reaction of both sides.

The left has had the advantage when demanding things for a while because people know the left can turn violent on a dime. Some of us on the right noticed that after the riots this year, corporations and politicians were suddenly trying very hard to prove how much they support BLM and the demand to defund the police was met in multiple cities. So it's no wonder that some Trump supporters decided that they ought to try rioting as well. Apparently it is effective.