I can see your point Tess. Personally I didn't see Palin's cross-hair map as violent or trying to inspire violence. I think the attacks on it were just some in the media wanting to throw a hissy fit and paint their opposition in a violent or barbaric light.
As far as the tweets go, I doubt that they will be highlighted by the same people who attacked Republicans or pretended to decry "violent rhetoric." Their goal was just to smear the other side in a self righteous manner by their failure to perceive intentions and desire to throw in violence wherever they could. The hypocrisy though in my opinion would be the individuals posting death threats that also think that Republican rhetoric is violent or see violence in other things that they disagree with.