Now that Mayor Bloomberg has dumped $50m into his new NRA-fighting gun control group, ye olde Brady Campaign Against Gun Violence is living in the shadow of Everytown. No matter. All for one, and one gun for no one. Or something like that. Anyway, I’m not entirely against the theme of this campaign. If you’re worried about unsecured firearms at your kids’ friends home, ask about unsecured firearms. First amendment and all that. HOWEVER, here’s the real trick to keeping your kids safe around someone else’s firearms: teach them what to do when they encounter a gun. My take: muzzle control is everything. Obviously . . .