In dissent, Justice John Paul Stevens wrote that the majority "would have us believe that over 200 years ago, the Framers made a choice to limit the tools available to elected officials wishing to regulate civilian uses of weapons."
He said such evidence "is nowhere to be found."
UPDATE: From Slate's Dahlia Lithwick:
But I must first pass along this rather brilliant observation from professor Stephen Wermiel from American University, who wonders why none of the dissenters cautioned the majority that today's decision "will almost certainly cause more Americans to be killed." (Boumediene, Scalia, J. dissenting.)