A government in power may argue that rights can be violated if a. it is necessary to stay in power. b. it is necessary to win the next election. c. it is necessary to do research on the opposition. d. it is necessary to maintain national security.

All of these are correct in the sense of human greed but the "correct" school answer is D. An example is whenever Chicago has a riot they enact Marshal Law which allows the city mayor to violate basic human rights such as freedom of speech or assembly in order to maintain order in the city.