How the NRA went from Police friend to Enemy in 30 years - what changed?

A good article which goes over the changes in the NRA to make most law enforcement officials upset with the current stand of A Gun For Everyone stand which the NRA are presently pushing.

http://www.alternet.org/how-nra-went-best-friend-nations-police-harsh-enemy-law-enforcement?page=0%2C1&akid=9979.294211.iX8dQr&rd=1&src=newsletter783906&t=3