There are lots of examples of stores having a policy of requiring shoppers to wear masks, and some people insisting they won’t because “this is a free country” and “I am not a sheep”. I guess they forgot about “no shirt, no shoes, no service”.
So they often post videos to social media of the employees refusing to let them in without a mask, patiently and kindly but sternly, refusing entry to unmasked customers. This is hilarious because they overwhelmingly are perceived as a “Karen” or “Kyle” - an entitled, normally suburban, person that feels the rules do not apply to them. Currently a typical behavior is refusing to wear a mask. Previous example of “Karen” behavior was calling the police if an African American was hanging out, or swimming.