tragic shooting in AZ

ok, so....a third term democratic congresswoman was shot and 12 others killed or wounded as a gunman opened fire at a town meeting in Tuscon yesterday....the shooter was captured and his myspace site scoured for clues.....from all i can read about him he appears to be anti-government.....my brother has FB'ed that the shooter was clearly a left-wing radical......clearly?......i would describe that sentiment as right-wing....the congresswoman was still shown as under the cross hairs of SarahPac....and the congresswoman herself has given public comment on the 'cross hairs' issue......so, should we as reasonable Americans hold SP responsible for inciting the unstable to actually put the targeted congresswoman in his cross hairs?