Here's some video from a training this past weekend by the Portland Police's
mounted patrol unit. The idea was to do some crowd control training with a few dozen volunteers acting as sign-waving protesters complete with fire and smoke bombs.
Looks pretty tame compared to an actual Portland protest, and I think the sign urging the arrest of Sharon (I'm assuming a reference to Ariel Sharon) is a little
outdated.
[youtube]http://www.youtube.com/watch?v=jygmA_KNRxw[/youtube]