Sam Li, 52 (center, lime green) has been playing 9-man volleyball for nearly 30 years and keeps up with the younger players. Kainaz Amaria/NPR hide caption

itoggle caption Kainaz Amaria/NPR

All Washington, D.C., liquor stores were closed on Aug. 28, 1963. While Maury Landsman's parents, who owned a liquor store, stayed home that day, he was determined to participate in the march. Charles Del Vecchio/The Washington Post/Getty Images hide caption

itoggle caption Charles Del Vecchio/The Washington Post/Getty Images

Historical photos and memorabilia decorate the walls of Rep. Lewis' office. Amy Ta/NPR hide caption

itoggle caption Amy Ta/NPR