Although 3k protesters doesn't seem all that big to me. Elections in Germany are coming up, and the results there will tell the tale.
Hurt, and the more they do it at Trump rallies, the more they help him in particular. Check out the video of some random old dude sucker punching a dreadlocked protester. If these BLM people can get elderly white dudes to take a swing at them, they are not really promoting their cause. And they should stop to think: who has the guns in this country?