"When one young man perched on a fence was asked what was going on, his thoughtful reply was simple: 'Beer!'"
ADDED: "There were people on top of the walkway covering in front of the construction, on the bus stop roof, and on basically every open surface. Even with windows closed, the sounds of singing and chanting were booming and clear. People were crowd surfing through the street." Said a woman who had a view overlooking State Street, whose tweeted view of the crowd went viral:
AND: Meanwhile, in Tucson, selfies at the riot.