At least seven people were killed and dozens more wounded in what should have been a day of celebration in Highland Park on the Fourth of July. According to officials, a gunman with a high-powered rifle shot randomly at paradegoers Monday morning from a rooftop nearby.

Reset talks with a reporter who was on the ground and witnessed the shooting, and hears from the mayor of a nearby suburb about the greater impact of the deadly attack.

GUESTS: Lynn Sweet, columnist and Washington bureau chief for the Chicago Sun-Times

Sarah Karp, WBEZ reporter

Daniel Biss, Evanston mayor