San Francisco is spotted with fires, vandalism and violence tonight; and the social web is showing us every gruesome detail.

Thanks to a few live streams and some citizen journalism, we're finding out a lot more about the current state of San Francisco than traditional media would usually afford us.

The city's baseball team, the Giants, won the World Series earlier this evening; it's taken almost no time for the city's ordinarily peaceful citizens to erupt in wild, rowdy and ultimately dangerous celebration.

While some people on the web are joking about hashtags and Foursquare "SFRiot" checkins, others are listening to a live stream of the city's police scanner. If you'd like to tune in, click this link, which will allow you to download a playlist containing the stream.

So far, we've heard unbelievable but nonetheless true stories: There aren't (yet) enough police to control the crowds, and available officers are improvising as best they can while calling other agencies in for support.

Still, crowds are surrounding and attacking police (at least one one officer may be down), store windows are being broken, citizens are found unconscious, cars and at least one bus have been set on fire. From the scanner alone, we are being shown a picture of utter mayhem.

UPDATE: A squad car containing assault rifles was just broken into, according to the police scanner.

UPDATE 2: Six shots were just fired in the Bayview at Third and Hollister. Simultaneously, officers from San Mateo are being sent back home and the scanner activity is becoming less frenetic; it seems San Francisco police are beginning to get things more under control at around one in the morning.

But a more literal picture is appearing as people on the scene send in snapshots to Twitter:

Twitter users are also sending in mobile videos such as this one shot at AT&T Park and this one from an unknown location. You can see tweets reporting various acts of vandalism, police actions and more in this interactive map. Or you can simply follow the hashtags #SFRiots and #SFRiot on Twitter.com.

Here's some video recently captured from 22nd and Mission, one of the hardest-hit areas:

And here's footage from 21st and Mission, where a car drove into a crowd; the driver subsequently had his tires slashed and windshield broken and was assaulted briefly by the crowd before police were able to intervene.

Images courtesy of YFrog users alecdet, fredsharples and kevinmonty.