At one point in time that was very much the truth, but ever since the advent of the tank our rifles, machine guns and pistols won't do much against an Abrams tank or MRAP rolling down the street, should a tyrannical government form. Until the last five or ten years or so you could've made a somewhat convincing argument of holding out against an overreaching sheriff's department, but with the excess military equipment making its way down to law enforcement agencies that thought has become moot. It's now holding on to vestages of the past, clutching the false idea of freedom and security that comes with keeping those firearms at hand.