Hell no they're not deputized. America relevant: It's similar to security anywhere, including "loss prevention" at a grocery store. They can tell you to leave,

Hell no they're not deputized. America relevant: It's similar to security anywhere, including "loss prevention" at a grocery store. They can tell you to leave, and if you don't, they can physically remove you from the property. That's pretty well established. It also applies to kicking someone out of your house that doesn't have a right to be there. If they hurt you inappropriately (there's a wide range between a trespasser bruising their fist on a guard's face and a guard holding someone down and pummeling them for no reason), they've committed a crime and might lose a civil lawsuit. Some places won't let guards touch trespassers. Other places lean on discretion and the training they've given to the guard, the cameras they have spammed everywhere, etc. The removal is usually covered in something like "we have the right to kick you out at any time, even if you paid." That doesn't cover all bases, but it covers a lot. If you never signed a contract with a venue, the removal is covered by the fact that you have zero intrinsic right to be there. For more examples, you can look at casinos in Vegas trespassing people. If you act out of line or gamble in a way they don't like (like successfully counting cards at blackjack,) they'll boot you. They might spread your name to other casinos if they really don't like you. And if you enter one again, it's criminal trespass. They can do it for anything that isn't legally protected.