Interpreting The Second Amendment

If the point of the Second Amendment is to allow its citizens to resist an oppressive government, would it mean that the Amendment is entirely obsolete? Modern governments have tanks that fire artillery the size of a human forearm and bombs that could misused on the peop. As gun-control advocates say, we can't fairly interpret the Second Amendment as guaranteeing the people a right to own weapon powerful enough to shoot down planes and obliterate heavy armored tanks. Interpreting the Amendment as protecting weapon ownership only in connection with membership in a state-organized militia avoids this difficulty.