UPDATE: Police chief says 14 dead, 14 wounded.

When is it enough to actually do something about these guns?

Fuck the NRA. Fuck the Republican party and the right wing hate machine. Those Syrian refugees might be safer back in Syria:

People keep blaming the NRA for mass shootings, but they weren't so common until after Obama told people to take guns to knife fights.

— Erick Erickson (@EWErickson) December 2, 2015

Hillary Clinton was speaking about gun control as the #SanBernardino shooting unfolded. Here's what she said: pic.twitter.com/ZPbmK7eUK3

— Liz Kreutz (@ABCLiz) December 2, 2015

We've got a liveblog up and running on the San Bernardino shooting, with many reporters working to bring you more. https://t.co/UHrZpYttZl

— Matt Pearce (@mattdpearce) December 2, 2015

#BREAKING SWAT team training nearby when gunfire erupted at social services center in San Bernardino, per KTLA. Suited, and ready to roll.

— WPEC CBS12 News (@CBS12) December 2, 2015

RT @Jezebel: At least 12 dead, 20 reportedly wounded in San Bernadino shooting https://t.co/cf4MVlUteh

— Vinay Dokania (@vinaydokania) December 2, 2015

The site of our most recent horror: "The IRC serves more than 30,000 people with developmental disabilities." https://t.co/tIe5tmP7X0

— Caitlin Gibson (@CaitJGibson) December 2, 2015

LIVE: At least one person opened fire at or near a state social services agency in San Bernardino. https://t.co/mgx5nuj9yo

— Reuters Top News (@Reuters) December 2, 2015

Shooting happened at social services facility for developmentally disabled, police said. https://t.co/aehEIg7xGi pic.twitter.com/x3Ag6VQjCe

— NBC Los Angeles (@NBCLA) December 2, 2015

UPDATE: FBI and ATF responding to assist local authorities in San Bernardino https://t.co/Ekf6Acw6jM

— ABC7 Eyewitness News (@ABC7) December 2, 2015

“Officers are currently searching for 3 white males dressed in military gear” https://t.co/OAqhbsmI5h

— Allahpundit (@allahpundit) December 2, 2015

3 Shooters Armed with RIFLES are Still on the Loose after Rampage Leaves 12 Confirmed Dead https://t.co/7Q8uBQ3Tpd pic.twitter.com/Gb32zBRjaB

— Breaking911 (@Breaking911) December 2, 2015

What @POTUS said after Oregon bears repeating: "Our thoughts and prayers are not enough." #SanBernardino

— Jeff Chu (@jeffchu) December 2, 2015

BREAKING: 12 people reported dead in mass shooting in San Bernadino, California. Updating details here: https://t.co/1OoUNHGgBg

— Fox5NY (@fox5ny) December 2, 2015

UPDATE:

In a press conference, the San Bernardino police chief called it an act of "domestic terrorism."