Critical thinking is exactly the opposite of forcing specific beliefs down someone's throat. A critical discussion of a controversial topic involves examination of different perspectives. Students are not forced to accept a particular one, but are judged (graded) on how well they present their case using facts, reasoning, and values. Some people, however, just can't accept that there is more than one valid way to view a controversial topic.
Unquestioning obedience to authority is a necessary condition for totalitarian regimes like Nazi Germany or the Soviet Union, and also for institutionalized bigotry like slavery/segregation in the U.S. or apartheid in South Africa. The same critical thinking skills that show someone how an authority is corrupt and its mandates misuguided, however, will also suggest how to pick one's battles, and when it is advisable to go along with something in the interests of some greater goal.