Andrew Pollock wore four sets of layers to a freezing protest outside the Broadview ICE processing center Saturday to deliver what he said was a “pretty straightforward” message to the federal government: “Killing American citizens is bad,” he said. “And they should stop doing that.” Pollock, 39, was one of hundreds to gather and march outside the west suburban facility to condemn recent violence by federal agents executing President Donald Trump’s nationwide campaign to arrest and deport citizens without legal status. The demonstration, one of the first large-scale events to occur in Broadview since federal agents pulled back from their...