At around 1 a.m. on Tuesday morning, armed federal agents rappelled from helicopters onto the roof of a five-storey residential apartment in the South Shore of Chicago , according to witnesses and local reporting. As they worked their way through the building, they kicked down doors, threw flash bang grenades, and rounded up adults and screaming children alike, detaining them in zip-ties and arresting dozens, they said. The military-style raid was part of a widespread immigration crackdown in