LAW SUIT IN 3.. 2... 1..
Which will be completely useless.
The cop was right. It’s a private business. They have the right to establish the rules of entry into their business. If you don’t want to wear shoes or a shirt or a mask, they can refuse entry. If you don’t leave, they can call the police who will then arrest you for criminal trespass.
I think masks are idiotic. But, I also believe in the rights of private property owners. If you don’t want to wear a mask, then don’t enter the private business. If you don’t want to get arrested, then leave when the cop tells you to leave. It’s that simple. She wasn’t arrested for not wearing a mask. She was arrested for not leaving when instructed to leave. That’s what’s supposed to happen on private property.