In the days before protests erupted in Los Angeles, the Trump administration stepped up its efforts to detain migrants — taking into custody those who arrived for routine check-ins while also conducting workplace raids that have sent waves of fear across Southern California and beyond.

A tense moment played out on CNN’s air Tuesday when a police officer trying to clear an area where demonstrators had been protesting immigration raids in Los Angeles confronted a reporter for the network seemingly caught in the chaos. As CNN’s Kyung Lah was reporting live from the demonstrations, the camera caught Los Angeles Police…