I'm going to be posting video and images on this page intermittently throughout the day, so check back and hit "refresh."
Our first video was shot by Chris Young near the intersection of Baum and Liberty. This was the altercation in which protesters began throwing rocks at police -- over the clearly-heard objections of others in the crowd. Police used rubber bullets during this fracas, though you can't tell from this footage. You will see a protester free a companion, and get taken into custody himself ... something that also happens over the equally clear objections of onlookers.
NEW VIDEO ADDED: This is a compilation of scenes from yesterday's unpermitted G-20 march, again shot by Chris Young. There are four segments: The first, lasting roughly a minute, shows demonstrators beginning their march. The second, which lasts about two minutes, shows the scene those marchers encountered at police barricades -- complete with the creepy pre-recorded dispersal announcement.
After that comes 30 seconds of ... well, I'm not going to give it away. You'll just have to see it for yourself. (Or check it out here, as a standalone video, created in response to popular demand.)
And the video rounds up with demonstrators calling out a suspected undercover officer ... with one marcher trying to screen the suspect off with a sheet of plywood.