I don't think you have a good grasp of modeling disease spread and are repeating things you read online without comprehension. Repeated exposure from multi-day protests in large groups of 3 person / sq. m. with multiple tent structures shared by people is not the same as 10,000 people climbing K2 one day at a time.
You're ignoring the fact that going outside to protest wasn't something you could just decide not to do, just like buying groceries. BLM protests and gathering indoors for fun are not equal.