This sounds exactly like Stalinist Russia. Stalin put out propaganda (equivalent to today's media) that discriminated against everyone who, not opposed, but did not merely agree with any part of his rule. He and another higher ranked member of the government (forgot the name) promoted the idea of a mass genocide of the people. This mentality was "if we can't find the traitors one by one, we take everyone out. Then there would be no chance of any opposition." This then developed into people 'selling out' or rather, turning in their bosses, co-workers or even friends to the secret police, where the accused were put in solitary confinement and executed without trial. This even escalated to Stalin himself arresting his children and his relatives.
Sorry about going off on a tangent, but this just reminded me of Stalin, especially how people have thought about wiping out the majority just to get rid of a minority.