Police states, and governments active in political repression, are aided by technology. Some of the equipment and techniques used in controlling and penalizing victims of the state include sensory deprivation, electronic surveillance, and a range of computer software for citizen-victim 'files', data bases and non-conformist behaviour detection. The supplying of such instruments of government repression is an industry having its own suppliers, much like the defence industry, and some manufacturers supply arms, ammunition and various devices both to state police apparatus and to the military. Countries which pride themselves on their political freedom may in fact have lucrative industries which supply such instruments of repression to the governments of other, less politically free, nations.
2. Communist party machine crushes revolts anytime it sees a threat to its monopoly: tanks in Budapest and Prague, martial law in Warsaw and gunfire in Beijing.