Some places are private property, but the public has access. Mall's for example. If you do something which is legal in the public square - public owned & accessible space - can the owners sue you for doing it in their space? I get they can ask you to leave, and if you do not, to have you removed and given a trespass order. But sue for money? In NYC women being topless are not breaking a law. Photographer sued over topless photo atop Empire State Building | Reuters But the guy who took pictures of her in the private space - public accessible - observation deck of Empire State Bldg - is being sued. Um, before you click there are, you clicked already?, no pictures from the event. You'll have to find those yourself. The Gun related issue is - if you open carry in one of these places (including getting made concealed carry) could you face a law suit other than the trespass?