Rumsfeld does - of course - not need to resign.

The torture and murder of men, women and children is only the tyrant's and dictator's responsibility, because their evil power is so overwhelming that they virtually control the actions of every single human in their country (e.g. Saddam Hussein)

In a democracy, luckiliy, the leaders are of course not responsible for the actions of some individuals, even if they are under their direct command. Why? Because in the ideology of the american oligarchic democracy, torture officially has no place. Therefore, the representants of a democracy cannot be held responsible for such actions.

Well, some things have gone bad in Iraq lately, but at least Saddam's torture chambers are closed forever...and the Iraqi's enjoy their freedom.