Reach for the Sky, Mister. Then Duck.

For years, and especially most-vociferously recently, gun advocates have pushed for more people to own and carry concealed guns, suggesting that the more people who have guns, the greater the impediment to the Bad Guys with guns who cause the problems.  That massacres wouldn't happen any more because all those people in the crowd who have their Colt '45s strapped on will whip them out and blow the Bad Guys away.

Four years ago, on April 10, 2009, ABC's magazine show, 20/20 decided to put that theory to the test.  The segment with Diane Sawyer was titled, "If I Only Had a Gun.”  And the only thing that got blown away was the lunatic theory.

Here's that fascinating story.  It's divided into two separate videos, but they should run back-to-back automatically.  The video begins a few seconds in, so don't be surprised if if seems like you've jumped in mid-sentence.  You have.