Sociological researchers maintain a mask of objectivity. But... when students in these movements report facts that contradict the tenets of their group's creed, they are... punished for their heresy.... forcing them "to leave the movement." A similar mechanism of repression is at work in every scientific discipline that I know.

Ch.9 The Conformity Police - Global Brain: The Evolution of Mass Mind from the Big Bang to the 21st Century (2000)