I'm here late tonight, but I'll still probably not get to see the crowd in all its glory, as I exit the building from the other side to catch my bus home. I'm sure I will hear them, though. Sound travels oddly well, and my cubie is right next to the window on the plaza side. Perhaps there will be mounted police later - I enjoy watching the horses and their different personalities. I can often see them because they usually post themselves across the street; it's pretty clear they are taking measures to seem non-threatening, just there in case of trouble.
I wish I felt protest gatherings did more good than simply giving people an outlet for their energy - we gather in far larger crowds for sports events, so sheer numbers are not likely to impress. I wonder if somehow apathy is the flip-side of tolerance, sometimes. Not that it has to be, certainly, just that it falls out that way due to primate laziness. I don't know.