13 people were occurred, including that 3-year-old boy. well, the mayor canceled a trip to washington to address the situation head on. >> we cannot allow children in the city of chicago, and we will not allow children in the city of chicago to have their youthfulness, their optimism, their hope taken from them. that's what gun violence does. that is wrong. >> that shooting was thursday night. no one has been arrested. but this is the latest reminder of the dangers facing some families in chicago. cnn's national correspondent deborah feyerick has more. >> reporter: it was a perfect night for a late game of basketball. perfect until the shattering sounds of gunfire. >> i just heard the shots, like 20 shots. >> reporter: panic and pandemonium spread quickly. >> it was just a lot of police, a lot of ambulances. just a lot of wreck, a lot of people, everything.