The National Highway Traffic Safety Administration (NHTSA) has identified 101 crashes where the deployment of the passenger air bag resulted in fatal head or neck injuries to a child. In addition, three children have been killed by driver side air bags. Nineteen of these deaths were to infants in rear-facing child safety seats. Most of the other 84 children were determined to be completely unbuckled, "out of position," or wearing only the lap portion of the safety belt (improperly restrained) at the time of the crash.
http://www.nsc.org/partners/facts1.htm#DSo, roughly one seventh of the number of US casualties in Iraq in this war, and legislation gets passed to enable you to turn off the airbag deployment (which generally, when used correctly, does save lives).
Mind you, most of these fatalities are when the airbag was deployed when the victim was not secured by a seat belt, or was in the front seat when the warnings said that they should be in the back. (And I do recall reading about one infant being decapitated by the airbag because first, the child seat was in the front seat, and second, it was placed incorrectly).