Thanks for the link, Jen!
I watched it, and shrillary freezes up and “Bart” pats her on the back —before— the animal activists hold up a banner (”hurting animals is not progressive”); they had started to take it out and I think that is what prompted the secret service guys to get up on the stage... then the protesters finally get it right side up and hold it up.
It’s the initial grabbing for something by the protesters is what started the stage rush.
A banner is the cause of her reaction? The way she looked you’d think the protestors were ripping the heads off kittens. No, no - there’s definitely something going on with Clinton. She froze and made unusual expressions. Once Bart touched her and spoke her entire body visibly relaxed, the facial contortions disappeared, she started to become aware and began repeating what Bart told her “we’re going to keep talking”. She was definitely in some sort of state.