Almost a week after it was put in place, Baltimore Mayor Stephanie Rawlings-Blake on Sunday lifted the city’s mandatory 10 p.m. curfew. The curfew was put in place when the city came to a breaking point as protesters took to the streets to call attention to the death of Freddie Gray, who died while in police custody. During the unrest, buildings were burned and looted. It was a similar scene to what ensued in Ferguson, Missouri, after the police shooting of Michael Brown. In both these cities, media and political leaders called them riots. But what constitutes a riot and when do we use that term? We discuss that and take a look back at the history of riots in Chicago and how those events shaped the city with WBEZ’s South Side reporter Natalie Moore. (Flickr/Elliott Plack)