Calling the police is exactly what they would be doing if someone was carrying a gun in a No Guns establishment and refused to leave when axed.
It’s all they can legally do.
“It’s all they can legally do.”
Or they could have given them a free cup of coffee. That would have made them sick and they would leave!!/S sorta....
What if you’re carrying an axe in an axe-free zone? Then they can’t axe you to leave.