This is why we should conceal carry and do not tell anyone that you are carrying.
Also, if you are accused of something in the business and asked to empty your pockets, refuse. And ask that the police be called. You are not obligated to give up you your rights to a security guard at a business.
This is why all of these “red flag” laws are a problem. It’s too easy to take people’s guns away with little to no due process. And what’s the process for getting the guns back? There probably isn’t one.