dissident
source sentence: "An observer can point to the inappropriateness of using the National Guard; to Nixon's speech on Cambodia (the follwoing day he referred to student dissidents as 'bums'); to the hysteria of local officials who called in the Guard; to the governer's overuse of them; to the sour mood of 1970 as the nation unhappily faced the prospect of final defeat in Indochina."
context clues: inference clues, (syn.) opposing, (ant.) agreeing
definition: disagreeing, as in opinion or attitude
original sentence: The editor threw out the peice on the president's financial plan because it was too dissident and opinionated.
http://dictionary.reference.com/browse/dissident