Political scientist: Some analysts point to the government' s acceptance of the recent protest rally as proof that the government supports freedom of popular expression. But the government supports no such thing. Supporting freedom of popular expression means accepting the expression of ideas that the government opposes as well as the expression of ideas that the government supports. The message of the protest rally was one that the government entirely supports. Which one of the following is an assumption that is required by the political scientist's argument? ['The government would not have accepted a protest rally whose message it opposed.', 'The message of the recent protest rally did not concern any function of the government.', 'The government feared a backlash if it did not show acceptance of the recent protest rally.', 'There are groups that are inhibited from staging a protest rally out of a fear of government response.']