How responsible is Sarah Palin for the shooting of Congresswoman Giffords?

Sarah Palin posted a map identifying “targeted” congressional seats, including Congresswoman Giffords, using what is clearly gun-site crosshairs, and she has refered to them as bullseyes. Combining that with her “we aren’t retreating, we’re reloading!” comment, is Sarah Palin partially responsible for creating and/or feeding the kind of mindset that set off the would-be assassin?