Last spring, Palin targeted Giffords' district as one of 20 that should be taken back. Palin has been criticized for marking each district with the cross hairs of a gun sight.
In the video posted Wednesday, the 2008 GOP vice presidential candidate said vigorous debates are a cherished tradition. But she said after the election, both sides find common ground, even though they disagree.
But Palin said that especially as a tragedy unfolds, journalists and pundits should not manufacture what she called a "blood libel" that incites hatred and violence.