What you are advocating is both foolish and a war crime. Foolish because the bulk of the Iraqi military is still out there, and the last thing we want to do is encourage them to fight to the death in Baghdad.
It would be a war crime because the Geneva Convention states that surrenders must be accepted. War crimes on the part of the Iraqis don't justify them on our part. We won't sink to their level.
What I would favor doing is bombing the next press conference that Iraqi Information Minister holds. He wears a uniform, and is therefore a legitimate target. If it kills a few Al Jazeera propagandists, that's OK by me. It would send a message that it isn't healthy to be near anyone in in Iraqi uniform.