After testing the toughness of “young elitist hipsters” at the Cake Shop, NYC, Henry Rollins has traveled to a Los Angeles Harley repair shop “to see whether these stereotypically tough bikers carry the warrior gene.” Seems scary, these “tough and violent lives,” but no worries: “It’s a world Henry can relate to…”

That scene’s from an episode of the National Geographic Channel’s Explorer called “Born To Rage?,” which as you likely guessed, “investigates the discovery behind a single ‘warrior gene‘ directly associated with violent behavior.” Here’s the promo:

While they have those swabs handy, they should probably test some of our commenters.