On April 4, 1968, the day a gunman shot the Reverend Dr. Martin Luther King, Riz Rollins was a middle schooler in Chicago. In those tumultuous years, not unlike our own, Riz said, "Rioting was a part of the fabric of daily life." As for what would happen in the aftermath of Dr. King's assassination? "I thought the sky was going to catch on fire." Today, Riz Rollins is a Seattle cultural treasure who you can hear every Monday evening on KEXP from 4-7 pm and occasional Sundays nights as one of the rotating hosts of Expansions, the electronic music show that is every discerning audiophile's ritual to wind down the weekend. This Sunday, the eve of MLK Day, will bring the 21st edition of an Expansions tradition, one that can't be stopped even by a pandemic that has put nightlife as we knew it in survival mode: the MLK Unity party. KEXP will dedicate six hours to the life and legacy of Dr. King, starting with Sunday Soul, hosted by DJ Supreme La Rock, and continuing through until midnight with Expansions' mind-altering quintent of radio jocks, Kid Hops, Sharlese, Brit Hansen, Alex, and of course Riz, who will each contribute a mix for the occasion. by Greg Scruggs