For all the rationale I ever heard about gun rights, the one you gave here might be the worst ever. If the government should fear it's citizens it's f
* up already, you might as well have real diplomatic or military intervention, not let people die fighting in the street like happens right now in Syria [1].
The sad truth is, oppressive regimes exist in the first place because more powerful nations benefit from it. My own country lived for 17 years under an oppressive regime backed by the gun bearing, world's freedom and democracy flagship.
[1] http://www.youtube.com/watch?v=hKsWGuLzsWk&list=PLC4FDC3...