This is nothing
While I think it's hilarious that one of the strident "you're killing grandma!" people here has been defending the mass rule-breaking at protests, the truth is that it is indeed pretty much a big nothing. Neither the George Floyd protests nor the infamous Trinity Bellwoods Park incident have made a noticeable difference. Transmission outdoors in fresh air and sunlight is unlikely.
On the other hand... get 18,000 yelling Trumptards jammed into an arena in close proximity breathing the same recirculated air, it's going to be a disaster. Just 2 more days to the Superbowl of Stupidity!
-k