I have spoken before about the Left's 'mask insanity'. Some Leftists are actively looking for people not wearing a mask or not distancing so they can harass and embarrass them, which is generally not a good plan.
However, the Leftist activists are used to dealing primarily with Republicans and Christians who tend to avoid confrontation. However when these guys wind up messing around with the wrong people, they get a swift punch to the face, or worse.