He held office during the unrest of the 1960s, some of which was provoked by the police department's discriminatory practices. In the Lincoln Park, Lakeview, Wicker Park and Humboldt Park communities, the Young Lords under the leadership of Jose Cha Cha Jimenez marched and held sit ins to protest the displacement of Latinos and the poor. After the assassination of Martin Luther King Jr. in 1968, major riots of despair resulted in the burning down of sections of the black neighborhoods of the South and West sides. Protests against the Vietnam War at the 1968 Democratic National Convention, held in Chicago, resulted in street violence, with televised broadcasts of the Chicago police's beating of unarmed protesters.