In 2021, violence spread into Chicago neighborhoods that normally enjoy a sense of security, rattling nerves and putting city leaders on the defensive

Deon Williams, center left, and Diamond Williams, center right, sisters of Shermetria Williams, release balloonsd with others during a vigil, June 16, 2021, for Shermetria who was among four people killed the previous day in Chicago’s Englewood neighborhood. (Chris Sweda/Chicago Tribune)