"Islamic militants are hardly alone in seeking to rationalize innocent deaths, says John O. Voll, a professor of Islamic history at Georgetown University. “Whether you are talking about leftist radicals here in the 1960s, or the apologies for civilian collateral damage in Iraq that you get from the Pentagon, the argument is that if the action is just, the collateral damage is justifiable,” he says." I like and respect John Voll, but I don't know of any leftists (especially Arab leftist organizations) who justified and rationalized the murder of innocent people. Even when some groups did that, they never provided justification. Also, which leftists in the US justified the killing of innocent people in the 1960s?