It is no surprise to me that someone started shooting at Democrats like Congresswoman Gabrielle Giffords (D-Tucson) when the Republicans openly advocated the use of "Second Amendment Remedies" in their campaigns and referred to members of Congress as "domestic enemies." This is a thinly veiled message that should Republicans lose the election at the ballot box they should start killing members of Congress.
Hate speech might have had a short-term political gain for Republicans in 2010 but there is a long-term price to pay. In my view those who would inflame people to violence bear some of the responsibility for the results. The Republicans have to realize that when you call out for domestic terrorism you get domestic terrorism.