Count On Clinton and O'Malley To Make Assumptions Without Data

From CBS:

With authorities still in the process of responding to an active shooting that claimed multiple victims Wednesday afternoon in San Bernardino, California, presidential candidates are weighing in on the attack at the Inland Regional Center.
Democratic White House hopefuls immediately took to Twitter to call for stricter measures controlling firearm access.
In a tweet, Hillary Clinton urged immediate "action to stop gun violence":

I refuse to accept this as normal. We must take action to stop gun violence now. -H https://t.co/SkKglwQycb

— Hillary Clinton (@HillaryClinton) December 2, 2015

Vermont Sen. Bernie Sanders noted that "mass shootings are becoming an almost-everyday occurrence" in the United States:

Mass shootings are becoming an almost-everyday occurrence in this country. This sickening and senseless gun violence must stop.

— Bernie Sanders (@BernieSanders) December 2, 2015

Less than a week ago, a gunman opened fire at a Planned Parenthood facility in Colorado Springs and killed three people, including a police officer.
Former Maryland Gov. Martin O'Malley called the latest news "horrifying" and took a stance against the National Rifle Association:

Horrifying news out of #SanBernardino. Enough is enough: it's time to stand up to the @NRA and enact meaningful gun safety laws

— Martin O'Malley (@MartinOMalley) December 2, 2015

Of course, the number of shooters, level of equipment, and apparently leaving bombs behind argues for ISIS or their lone wolf accomplices.  But of course they are already assuming it is a mentally ill mass murderer.