Immigration enforcement agents are detaining people and taking them into custody, at times under public anger and outcry. What’s often not visible are the agents’ faces, covered by caps, sunglasses, pulled-up neck gaiters or balaclavas, effectively rendering them unidentifiable. The increase in high-profile immigration enforcement was already contentious between those opposed to the actions of President Donald Trump’s administration and those in support. The sight of masked agents carrying it out is creating a whole new level of conflict in a way that has no real corollary in the U.S. history of policing.