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Well, let's see. They review Acumen's psychological evaluation before anyone joins, to make certain to weed out those who are just seeking authority to take advantage of others, or to gain access to a weapon. They also break up fights when they can, and keep track of who causes trouble, operating on a strict policy of tabula rasa-- all criminals are equal; you get the benefit of the doubt until you misbehave, regardless of what you've done back home.
Which leads to it being popular with some, and unpopular with others.