I think I already mentioned – scary demonstrations decease virus spread in a city, as most people (the ones you do NOT see on TV) stay home or avoid crowded places.
What is concerning – that Mr. Biden started forgetting and messing up his mask starting from his first speech after election. Then, he had extended families hugging on stage at such close contact that masks are not of help. Even if they are all pre-tested, this was even riskier than Trump’s WH meetings.