We had large BLM demonstrations yesterday here in Germany. Demonstrators did not follow Corona virus rules (compared to e.g. fridays for future). If COVID-19 spreads in those circumstances (outside, mostly with masks, but close contact + chanting), this'll have been the last of those demonstrations here.
There are few black people in Germany. They are racially profiled, probably just as much as middle-eastern looking people, but excessive police violence against them is rare, and usually properly investigated and punished.
In Germany, much of the ire around unpunished excess police force is around riot response squads who regularly use excessive force against leftist protests (anti-G20, anticapitalism/Occupy, anarchists), especially if some of the protesters turn to vandalism, start setting fires or attack the police.