the post doesn't actually state who asked them, or whether she was involved in the request at all.Even if it is private the idea that another government official is using their power on a 3rd party to Silence you is kind of an infringement....
I assume that the venue asked them to leave. but either way goal presenting part of the information, potentially showing a major lack of understanding of the first amendment doesn't do any good for anyone. rage-bait only ever hurts the conversation; leave it for the youtubers and bloggers, not an org that represents a lot of gun owners, in an already hostile environment.