Traffic in Westwood was badly snarled Wednesday afternoon because of a student protest and street sit-in against the cost of higher education and the banking industry’s purported role in it.

After a march by about 200 protesters from the UCLA campus, several of them sat down in the busy intersection of Westwood and Wilshire boulevards and refused to move for about an hour. The result was traffic chaos in Westwood, which otherwise is clogged because of construction on the 405 Freeway that runs along its western border.

Shortly after 3 p.m., police arrested 11 people blocking the intersection on suspicion of refusal to disperse, said Norma Eisenman, a spokeswoman for the Los Angeles Police Department. Traffic began to flow again soon after, she said.

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