Just thinking out loud, but with all this whack jobs harassing maskless people. Y videotaping them, the maskless people should have a 60 second sales pitch to drop on them. No need to argue, just drop all the facts how masks don't work, the survivability rate is 99.95%, and other statistical/probable facts then walk away. If they continue, then repeat everything. When they go to post the video, all their followers will bear the facts over and over again.
Since a similar idea worked for Facebook screeners having to filter right wing memes, iand we saw that they either converted or had a break down, this might work as well.