ABC news staged an active shooting scenario with random individuals and it went as expected:

[friendly_iconoclast]

46. "Not NRA" The Centers for Disease Control, actually:

http://www.slate.com/articles/health_and_science/human_nature/2013/06/handguns_suicides_mass_shootings_deaths_and_self_defense_findings_from_a.html

The gun control debate is certainly worth reopening. But if we’re going to reopen it, let’s not just rethink the politics. Let’s take another look at the facts. Earlier this year, President Obama ordered the Centers for Disease Control and Prevention to assess the existing research on gun violence and recommend future studies. That report, prepared by the Institute of Medicine and the National Research Council, is now complete. Its findings won’t entirely please the Obama administration or the NRA, but all of us should consider them. Here’s a list of the 10 most salient or surprising takeaways...

...7. Guns are used for self-defense often and effectively. “Almost all national survey estimates indicate that defensive gun uses by victims are at least as common as offensive uses by criminals, with estimates of annual uses ranging from about 500,000 to more than 3 million per year … in the context of about 300,000 violent crimes involving firearms in 2008,” says the report. The three million figure is probably high, “based on an extrapolation from a small number of responses taken from more than 19 national surveys.” But a much lower estimate of 108,000 also seems fishy, “because respondents were not asked specifically about defensive gun use.” Furthermore, “Studies that directly assessed the effect of actual defensive uses of guns (i.e., incidents in which a gun was 'used' by the crime victim in the sense of attacking or threatening an offender) have found consistently lower injury rates among gun-using crime victims compared with victims who used other self-protective strategies.”

The full report can be found here:

https://www.nap.edu/read/18319/chapter/1