In The Federalist, No. 10, James Madison lamented the inevitability of "factions"--i.e., organized groups that pursue their narrow self-interest at the expense of the common good--in free political communities.View Michael Kirk's FRONTLINE documentary Gunned Down: The Power of the NRA: the National Rifle Association fit Madison's definition of a faction? In other words, is the NRA's agenda harmful to the common good?