So, I have it on good authority of a witness.

In my little county, a man walked into a laundromat to do his laundry and didn't wear a mask. The owner of the facility has strict rules and procedures. She told him to put on his mask, and he refused.

She called the police. Who knows if they actually have jurisdiction, but shortly thereafter two squad cars pulled up. The polite policeman looked at the offender and told him very directly to "put your f**king mask on." He quickly complied.