The other day, I was asked to leave a bank because I was carrying. The manager of the bank said that it says on the front door that no firearms are allowed inside. I asked her to show me the sign as I had not seen it when I entered. It was at the bottom of the door and about the size of a fifty cent piece. It had a picture of a gun inside a circle, with a slash through it. My question is, when does an establishments rules override state law?