“It's difficult to hear “Feds Did a Sweep," the closing song from Future’s new self-titled album, without thinking back to the “March Madness” video. That clip, for the anthemic 56 Nights single, was interspersed with footage of police officers murdering black civilians. “Feds” is itself interrupted by the police banging at the door, waving a warrant, picking “the dawgs up like an infant.” At the e”