When we worry and wonder about authoritarian regimes that inflict cruelty on civilians, we often imagine tyrannical despots unilaterally advancing their sinister agendas. But no would-be autocrat can act alone. As a practical matter, he needs subordinates willing to carry out orders. Of course, neither Donald Trump nor Steve Bannon personally detained any of the more than 100 people held at airports over the weekend pursuant to the administration's executive order on immigration, visitation and travel to the United States. They relied on assistance.