My wife reports that one lane was blocked off and six police cars with lights flashing. She was on her way to Arcata at about 4:00. I’ll check around the blogosphere, but all reports are welcome.
Another driver reports that it was cleared up, but a sizable protest remained, by 5:30.
Addendum: NCJ Blogthing has some photos. It looks like the protesters put some shelters back in, and the authorities removed them. No indication of any altercations in the report.