High school senior D'Angelo McDade, front right, leads a march in Chicago's North Lawndale neighborhood during a walkout to protest gun violence, Wednesday, March 14, 2018. About 200 students joined Wednesday's march as a sign of solidarity with students at Marjory Stoneman Douglas High School in Parkland, Fla., the scene of a recent school shooting in Florida in which 17 students and educators died. (Photo by Martha Irvine/AP Photo)
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