There's even more exciting gun news today, coming from a small non-profit organization called Defense Distributed. They announced that they have successfully test-fired a gun made almost entirely in a 3-D printer. The only part that wasn't 3-D printed was the firing pin. And the bullet, of course. Now previously, people had made gun components in 3-D printers, but prior tests of entire weapons had been unsuccessful. This raises some rather troubling questions, which we'll get to in a moment. But first, here's their short video, which shows the firing and construction of the gun, inexplicably interspersed with shots of World War II-era bombers:

The government’s April jobs report produced some happy headlines and a big stock market rally. The dismal March jobs tally was revised upwards from under 100,000 new jobs to a still feeble 138,000. In April, the economy created 165,000 jobs. The nominal unemployment rate dropped all the way from 7.9 percent to 7.5 percent.

But look a little deeper and you’ll appreciate just how crummy these numbers are.

In today's edition of Republicans Think the Darndest Things, a poll from Farleigh Dickinson University that came out the other day found, as polls regularly do, that Americans in general and conservative in particular believe some nutty stuff. That's not really news, but there are some reasons to be genuinely concerned, which I'll explain. The headline finding is this: Respondents were asked whether they agree with the statement, "In the next few years, an armed revolution might be necessary in order to protect our liberties." Forty-four percent of Republicans—yes, almost half—said they agreed. We've been doing pretty well with this constitutional system for the last 224 years, but it's just about time to junk it.

The right reaction to any shocking poll result is to say, "Let's not make too much of this." And I don't think any but a tiny proportion of the people who would answer yes to that question would actually start in or participate in a revolution. Let's take the gun owners who email me every time I write an article about guns, telling me I'm an ignorant unmanly Northeastern elitist liberty-hating girly-man wimp (yeah, they're heavy on the accusations of insufficient manliness; this is what psychologists call "projection"). If their neighbor came over and said, "Enough is enough; I'm going down to the police station to kill some cops—you know, for liberty. Are you coming?", how many of them would actually say yes? Not very many.

Nevertheless, the fact that so many people are willing to even entertain the idea is appalling, and we have to put the responsibility where it belongs.

You may have heard the story of Caroline Sparks, the 2-year-old Kentucky girl who was killed this week when her brother, all of 5 years old himself, took the rifle he got for his birthday and shot her in the chest. I suppose we should be thankful this kind of thing doesn't happen even more often; as a Kentucky state trooper told CNN, "In this part of the country, it's not uncommon for a 5-year-old to have a gun." I'm sure that when gun rights advocates heard the story, they said, "Oh geez, here we go again." They'd have to deal yet again with people being upset when innocents get killed with guns. They'd have to explain that as tragic as Caroline's death is, it doesn't mean that we should change the law on background checks. After all, that 5-year-old boy got his gun from his parents, not at a gun show.

Whatever you think about gun advocates, could they be right on this point? Sure, it's a little rich coming from people who are constantly stoking fears of home invasions, fascist takeovers, and utter societal breakdown to justify our current lax gun laws. But do we get into trouble when our arguments about public policy are based on emotionally vivid but unrepresentative individual stories? Maybe.