Congresswoman Giffords is not the only one targeted by extremists

Even professors are unsafe. This from the Chronicle of Higher Education today:

On Death Threats, Pushback, and the Hounding of Frances Fox Piven
Zach RobertsFrances Fox PivenEnlarge Image
By Peter Schmidt
As much of the world recently watched footage of assaults on journalists and protesters in Egypt, America's academics received word of a danger to their own free expression. Frances Fox Piven, a professor of political science and sociology at the City University of New York's Graduate Center, was getting death threats from followers of Glenn Beck, the conservative commentator.

This begins to sound to me like an echo of the first stirrings National Socialism in Weimar Germany.