They must post a no gun sign so that visiters know that they may be at risk.
Are we to force everyone to publish a newspaper or otherwise make public their opinion on every issue? What happened to privacy and mind your own business? If someone doesn't want to have a gun(newspaper)(car)(eat meat)(vote)(----) as long as it doesn't involve their actual attack on another person then it is their right. They do not have a right to demand I conform to their way.