Elizabeth Snead at the LA Times comments on the Newsweek cover with Sarah Palin. I think she's making a joke, when she says:
Hey, is that even the right way to hold a rifle? Can't you shoot your foot off like that?
Much more amusing to me are all the comments to her post which correctly point out that Palin is not holding a rifle, she is holding a breech-loading shotgun. And there is no possible way for it to fire without having the trigger pulled and the stock locked. But those are details which don't get taught out here in LA LA land.
So charitably, Snead is just a bit ignorant of firearms, nothing wrong with that at all. Too bad she tries to make a joke about one and falls on her face.