The NRA is possibly the purest civil rights organization in existence.
I also joined the NRA last month and recently received my Gold and Black cap as a Thank You.
Over 40 years ago, I had a pleasant encounter meeting Alan Gottlieb of C.C.R.K.B.A. (Citizen's Committee for the Right to Keep and Bear Arms) and the Second Amendment Foundation. I will put those folks out there also as organizations to defend the cause.