As another violent summer ends in Chicago, Mayor Lori Lightfoot vows to fight crime. But critics say the city is in crisis.

Angela Gregg, center, the mother of Mychal Moultry Jr., is joined by community members, faith leaders and Chicago police during a prayer walk in the 6500 block of South Ellis Avenue in Chicago on Sept. 10, 2021. Mychal, who was 4 years old, was shot and fatally wounded in this block. (Terrence Antonio James / Chicago Tribune)