Gun Facts, Gun Rhetoric.

Good discussion of data relevant to the gun control debate at the generally balanced and objective FactCheck.org.  Unfortunately, the authors do not generally evaluate the reliability of the data or research.  Many of the sources obviously have a motive to fudge.  For instance, the folks who do the Small Arms Survey are clearly anti-gun.
Bottom line:  the Second Amendment puts the burden of proof on the gun banners to demonstrate effectiveness, without significantly impairing the right to self-defense.  They aren't even close.  Thanks to Dale Christopherson for the link.