The concept of the 2nd Amendment is powerful. Don't think for a second that it isn't.
During the Civil Rights Movement, the NRA and Reagan actually started passing massive gun control laws when the realized Blacks were arming themselves. Hell, even MLK was armed and had armed security.
I guarantee you this is one of the best articles you will EVER read on this:
The Secret History of Guns - Adam Winkler - The Atlantic
Here is the intro:
Also, Malcolm speaking on the 2nd Amendment:
MALCOLM X ON THE SECOND AMENDMENT - YouTube
Starts around 2:30.