Union Square
The only thing I could bring myself to attend yesterday was to walk through Union Square, which was amazing and cool: a wall of people's handwritten statements on colored paper, people milling about, talking, discussing, "conversations" written in chalk on the sidewalk. (It was hard to avoid walking on them, but then I thought it was ok; I'd be taking some of the sentiments with me on my shoe soles.)
Yesterday was different for NY; the whole thign was so much more immediate, tactile and intimate in a strange way for us. Salon gets this pretty right in this article. (Premium content, unfortunately)