No one can throw down and party like San Francisco. Violet Blue posts to Twitter, “Street dance party closures @ 16/gurerro and 19th/valencia, plus divisadeo/hayes and castro/market. cops are being tolerant.”

Here is a small gallery of photos from the celebration at 19th at Valencia in San Francisco’s Mission District. Extra Action Marching Band led the crowd in jubilation, and there were many cheers and chants of “Obama” and “U S A.” The mood was ecstatic, and the cops were polite and extremely hands-off; a little after midnight, when they finally asked Extra Action Marching Band — who have a reputation for chaos and noise — to start to shut down, they did so with smiles and were met with the same.

Other celebrations took place at 16th and Guerrero, Divisadero and Hayes, with the largest at Castro and Market / 18th Street, where crowds of thousands were assembled and DJs spun turntables and blasted tunes.

But to paraphrase Violet Blue, “Obama was the party, Prop 8 is the hangover.”