All of the Bernie supporters are wearing shirts that glow under the blacklights. From what I gather, the plan is to be silent the entire night and walk out when Hillary starts speaking.
Judging from the video - https://vid.me/4tYB - they don’t even have seats to sit in and even if they stand, those in front of them have been instructed to stand up and hold big signs which block them. Also there are what they’re calling white noise machines all over the place to drown out and garble the Bernie chants.
I heard they’re going to try a citizen arrest of Hillary when she starts her speech.