The government may be corrupt, but it is not in the governments interest to kill it citizens. Even if it was, the government have access to far more effective weapons than guns, for killing people en masse, so owning a gun would be pretty pointless against a government that could just bomb you out of existance if that was their want.
You must of been very stoned in the 60s and 70s and missed the VietNam war Spuds. JUst to bring you up to speed the NorthVietnames armed mainly with a somewhat crude AK-47 rifle beat the worlds greatest superpower in only 10 years. Your government doesnt have to bomb you if they can simply brainwash you into thinking they would.