As a helicopter swooped around the Mission, shining a spotlight onto the streets, at least 40 police officers stood in riot gear at 18th Street and Mission at 11:45 p.m.
Using a bullhorn, one officer declared the situation an unlawful assembly and ordered the crowd to disperse immediately.
Moments before the announcement, a recycling bin was flipped and lit on fire between 17th and 18th streets, and a young man hit the Muni lines off the wire.
The police directed traffic on 18th Street, but parts of Mission Street were blocked off. For the first time since the World Series ended in a Giants’ victory hours ago, horn honking has slowed to occasional at this intersection. A helicopter still roars overhead.