"Such people should be taken from the society as rapidly as possible and uniformly institutionalized; for here is the level of the contagion of immorality, and the destruction of ethics; here is the fodder which secret police organizations use for their filthy operations. One of the most effective measures of security that a nation threatened by war could take would be rounding up and placing in a cantonment, away from society, any [such] individual who might be connected with government, the military, or essential industry; since here are people who, regardless of any record of their family's loyalty, are potential traitors, the very mode of operation of their insanity being betrayal. In this level is the slime of society, the sex criminals, the political subversives, the people whose apparently rational activities are yet but the devious writhings of secret hate." - L. Ron Hubbard on people who haven't undergone Dianetic treatment
Notice how similar Hubbard's out-group hate-mongering sounds to other demagogic speech such at Nazi anti-semitism or Coulter liberal bashing. What these have in common is the creation of an insular in-group (Us) which is good and ethical and an evil out-group (Them) which is not to be trusted. Once the out-group has been sufficiently demonized their illtreatment can be rationalized and considered acceptable. It should also be noted that this will often go hand-in-hand with the propaganda technique of scapegoating, the process by which some group (such as the Jews) is blamed for the woes of the in-group.
In the case of Scientology, you end up with the Fair Game policy in which persons who are critical of the Church can be dealt with by any means necessary to silence them. That's what out-group politics do: they make the other guy "fair game."
For a comprehensive site on about nearly everything on Scientology, visit Operation Clambake.