According to Monbiot, you’re ignorant and guilty of an obvious fallacy if you oppose abortion whilst promoting capital punishment:
This is classic, sloppy, liberal claptrap. Santorum may be a shit, but he’s perfectly capable of holding the position that an innocent foetus has a moral status, and is arguably a person, and thus abortion in all instances constitutes murder and is thus necessarily wrong. And nothing there commits him to giving up his concurrent belief that persons can do things that change the boundaries of what we can do to them: namely, if someone commits a heinous crime, it may be the case that they come to deserve the death penalty. Think what you like of that, but don’t tell me believing one makes you an idiot for thinking the other.