The protesting had been fairly low-key here in Denver in the early days of DNC week, so much so that the AP ran a story Monday afternoon about how some of the roads leading to the Pepsi Center were re-opened due to low protestor turnout. (Uh oh, protest ratings are down, what will the advertisters say?)
Then came Monday night and some static developed outside the Sheraton Hotel where the New York delegation is staying, along with California and some other big wigs.
Tension grew between the protestors and law enforcement, leading to the use of tear gas. Hotel guests were not allowed into their rooms for a while.
Here's more from Staten Island politics guy Tom Wrobleski who was around the fray.
And here's more from the early Tuesday morning arrests of other protestors.