Political power comes from the barrel of a gun.
This is why those who hate freedom also hate and fear an armed nation. It is not possible to make slaves of people who will shoot you dead for trying. Attempting to enslave a politically empowered (aka armed) nation is nothing more than an elaborate means of committing suicide.
The fundamental human right to keep and bear arms is the foundation of popular sovereignty in America. It is what makes this a nation whose citizens are their own masters, and more importantly masters of our government. The alternative is a country peopled not by citizens, but by subjects, beholden and subservient to the state. This is what would-be tyrants of every political stripe dream of.