I don't know the explanation either, but I have noticed that the more BLM signs in a neighborhood, the more masks

Powerline explores an astonishing difference between Democrats and Republicans when it comes to fear of COVID.

The most plausible, to me, explanation comes from a Powerline reader’s comment: Democrats watch CNN and mainstream media and so are fed a barrage of Kung Flu horror stories. If so, and the Democrats win next month, we can expect that steady diet of fearmongering to cease, either on November 4th or, more likely, Inauguration day, and we can all calm down.