If we are not moving to wearing blue and gray again, and if shirts-and-skins is impractical, perhap everyone sporting some other visible emblems would put our sociopathic neighbors on notice that they are in the minority.
At this point, I’m willing to wear a mask everywhere I go to distinguish myself from the Trump death cult. Non-maskers and anti-vaxxers are already doing the equivalent. If sensible Americans wore masks, in most populous places Trumpists would find out very quickly how much of a minority they really are.