(video below)
http://www.prisonplanet.com/articles/may2005/030505paincompliance.htm"After Tent State University education fee protesters refused to leave a field and wanted to camp there for the night, police used chokeholds and 'pain compliance' to disperse them."
More info here:
http://www.indybay.org/archives/archive_by_id.php?id=3135&category_id=30"Approximately 20 participants in the Tent University protest and teach-in at UCSC were arrested this evening by university police. Information on the arrests has not yet been released by UCSC police or the Santa Cruz Sheriff, but according to reports on Santa Cruz Indymedia, arrestees were dragged and clubbed by police and subjected to pain compliance and chokeholds. With a large crowd gathered and an increasing presence of cameras documenting the police brutality, university authorities eventually made a concessionary deal with organizers allowing a small number of participants to camp on the field, according to reports on Free Radio Santa Cruz. The arrestees were transported to the Santa Cruz county jail, where a large crowd was gathered in support as of 1:30 a.m. 4/19."