"There was a time, from the late 1940s through the 1960s, when the now-upscale Lincoln Park neighborhood served as the beating heart of Chicago’s huge Puerto Rican community, and the base of operations for a band of Puerto Rican revolutionaries known as the Young Lords. Led by a young man named José 'Cha Cha' Jiménez, the activist group – which evolved from a social club to a street gang to a political force – banded together with the Black Panthers as the Rainbow Coalition to wage war against what they called Mayor Richard J. Daley’s “urban removal of the poor” and the area’s eventual gentrification" (WTTW).
