I know.. so it's good that I go to the UW, and don't live in the dorms. 😉
They used pepper spray to "encourage" people to leave last year, but it was a couple years ago (I think '02?) when the police used tear gas to break up the crowd. The crowd was drunken, and the guys were getting all worked into a frenzy by some visiting females performing a, uh, striptease of sorts from a second floor hotel window. Things went a'flying and the police cracked down.
Last year I got out of the main group of people after a bonfire started on the street and the cops showed up in riot gear. Seemed an appropriate time to leave.
Anyone else who's been here for other years?