Last August a 28-year-old gay-rights volunteer named Floyd Corkins entered the office lobby of the Family Research Council (FRC), a Christian traditional-values group headquartered in Washington that condemns homosexual conduct and opposes same-sex marriage. Corkins took a gun from his backpack and fired three shots at building manager Leo Johnson, one of them wounding the unarmed Johnson in the arm before he wrested the gun from Corkins.