DENVER -- Twenty-six convicted killers tried to buy guns in Colorado this year but were denied as part of the state's instant background check program. The 26 killers were among the nearly 5,000 people who were denied a gun purchase because of their criminal records through November of this year, according to data from the state's InstaCheck program. Colorado is one of just 14 states that conduct its own criminal background checks on potential gun purchasers. Other... (GunPolicy.org)