http://www.berkeleyside.com/2011/11/12/councilmembers-open-letter-re-police-violence-on-campus/
Wish he'd get me a break on my numberous parking tickets....
His district represents much of south campus, so staying in good with the students is his bread and butter. There is a long history of tension between UCB and the City, with the City obiviously more liberal than the Uni administration. The university is on Regent owned property and they can invent any rule they want. There are jursdiction disputes with long histories.
As to beating students to make them go away, there are practical reasons. They were probably not violitating any particular university rule. I'd wait and see how Birkenau writes up some fake rule or policies. The real power of these fake rules, is getting enough violations to get kicked out of school. One of the old ones, was improper use of university facilities. These are handled in an administrative law system within the university. You appeal to a Dean .. So we'll see.