I guarantee that almost every single one of those organizations on that list are liberal. Most were from California and we all know how liberal they are.
Not all of Commifornia is liberal. Where I grew up (and my parents and friends still live) is conservative, and many of them love their firearms and hate the firearm laws of CA. The problem is that the costal areas, and highly populated areas are extremely liberal and don't really know their ass from a hole in the ground.