This ought to hurt Romney. But it won’t. The undecided voter couldn’t find El Salvador on a map and doesn’t care how many archbishops Romney’s investors killed. And the wingnut base – both the unwashed masses and the Murdochized commentariat – has no more objection to right-wing terrorism today than it did when the Reagan Administration was funding it.
The charge that much of the early money in Bain Capital came from the folks who murdered an archbishop in his own cathedral ought to hurt Mitt Romney. But it won’t.