Doesn’t she have a police force?

OAKLAND — Faced with ever-increasing violence between police and Occupy protesters, Oakland Mayor Jean Quan is seeking help from a new source: Occupy Wall Street.

Quan plans to ask leaders of the national Occupy movement to convince their Oakland cohorts to shun violence during their protests over economic inequality, officials said Monday.

“This splinter group inside Occupy Oakland — the ones who advocate violence — are not in sync with the rest of the movement,” said Sue Piper, Quan’s spokeswoman. “People who have been involved with the national movement — and a lot of people who live in Oakland — are really fed up with this splinter group. This is not what Occupy is supposed to be about.”

City officials estimated that about 400 people were arrested Saturday night following protesters’ attempt to take over the vacant Henry J. Kaiser Convention Center near Lake Merritt. Three police officers and several protesters were injured in a melee that stretched across downtown.

She might have a tough time reaching anyone, though. Occupy Wall Street, like all Occupy offshoots, has no formal leadership and little connection with other Occupy groups. Calls and e-mails from The Chronicle to activists within Occupy Wall Street were not returned Monday.