What is the oldest civil rights organization?

The oldest civil rights organization in the country is the NRA, in that it protects the right to bear arms aka the second amendment. Most people don't realize the NRA was established by Pastors and Reverends who wanted to teach recently freed slaves how to shoot and defend themselves. "The National Rifle Association of America (NRA) is an American nonprofit organization[5] founded in 1871 that promotes firearm ownership, as well as police training, firearm safety, marksmanship, hunting and self-defense training in the United States."