This reads like something a Sovereign citizen would write.
The first amendment allows you to say whatever you want without threat of arrest, but it doesn't give carte blanche to do whatever you want whilst saying it.
If you're on privateproperty after closing time to the public, then you're trespassing, regardless of why you're there.
The threat of arrest is something you have to accept if you're going to protest in a disruptive way - the ones you're protesting against will do anything they legally can to get you to stop.