CHICAGO — Shifting in her chair as she sits at a long conference room table inside the Chicago Teachers Union offices, Stacy Davis Gates lets it sink in. The Chicago Teachers Union president, having just spoken at length about the struggles of Black residents in Chicago neighborhoods, justice as a foundational classroom principle and the triumph of helping a former teacher get elected mayor, finally stops. “Look at me. Like, both my grandmothers: sharecroppers. Literally, Sunflower County