CHICAGO—Thousands of demonstrators gathered in Logan Square Park on the city’s Northwest Side on Friday evening to demand justice for Adam Toledo, the seventh-grader whose death at the hands of a police officer last month has shaken much of the city to its core. The protest kicked off around 5:30 p.m., and protesters began marching down Milwaukee Ave. at 7 p.m. The event started out peacefully, but anger was palpable among the crowd.