Twitter pummels 'war criminal' Donald Rumsfeld after he laments that life's too short

Twitter users heaped scorn and derision on Donald Rumsfeld after the former secretary of defense lamented that he would not likely live long enough to see a flat tax enacted.

The 83-year-old Rumsfeld's tweet invited social media users to vent their anger at him over the Iraq War and other misdeeds when he served in the George W. Bush administration.