Like I've said they're damn fortunate they weren't all mowed down. If it's ever attempted again that is precisely what will happen.
Can't ever prove it, but I heartily believe that there were (plants) among the hard core Trumpers. bum, it is the almost (rehearsed) and a sameness to the actions outside & inside that is the tell. It is almost like there was a waltz twixt protester & cop at times.