I walked into a liquor store without a mask. The guy comes out from the back room and says "you got a mask?" in a demanding way. I say "you want my business, or not?", and he says "yeah..." in a defeated sounding tone. I get some whiskey and say thanks, and that was it.
Small businesses should be ignoring this nonsense, but maybe he watches a little too much TV.
When someone bitches at me about my lack of wearing the mask, I immediately accuse them of racism. That always seems to strike a nerve with those types.