We went to a concert Saturday night and I seen a couple of people with like LGBT pride Flags and a few posters held up by fans. And the way they made us empty your pockets and go through metal detection I don't think that something like that could have been snuck in. Maybe the flags but not the big poster boards. So with that being said they might be allowed. They just probably wouldn't want you to hold them up in the air all the time and blocking people's view.
I see personnel fan flags but nothing bigger
I don't think so
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