Fourteen people, including two young boys, were shot in Chicago over a 15-hour period from Monday night to Tuesday morning.

Six people were killed and at least eight were wounded, following two consecutive weekends when more than 50 people were shot in the city.

Chicago’s mayor, Rahm Emanuel, and police officials repeated their calls for stricter gun laws and a more robust criminal justice system.

“I’m angry about what happened here and I think I speak for everybody,” Emanuel said on Tuesday. “And I think I speak for everybody when I say enough is enough.”

The shooting streak began on Monday evening when a family was shot in the South Side’s Back of the Yards neighborhood while exiting their car around 7.15pm.

An 11-month-old child, Princeton Chew, was seriously injured in the shooting, which left his mother and grandmother dead. His aunt, Monique Williams, is a nurse and was able to stop the infant’s bleeding while waiting for an ambulance, though none were nearby, and police officers had to transport the baby to a hospital themselves, according to ABC7.

“In a second, two generations of that child’s family were wiped out,” said Eugene Roy, deputy chief of the Chicago police department.

Two 25-year-old men were also were wounded in the shooting.

Five more people were shot a few minutes after midnight on Tuesday while attending a barbecue to honor a person who had died in a car crash 12 years earlier, according to the Chicago Tribune. Three of the victims died.

The Tribune has been tracking gun violence in Chicago for four years and regularly reports record-breaking incidents of gun violence.

The shootings these past two weeks follow a four-week period in August, when more than 40 people were shot each weekend. At least 2,300 people have been shot in the city this year, which the Tribune said is 400 more than were shot in the same period last year.

The four other people shot from Monday night to Tuesday morning include a two-year-old boy, who was grazed by a bullet in an accidental shooting. Police said he was in good condition.

On Monday night, a 26-year-old man was wounded after being shot while riding his bike. That same night, a 23-year-old man was shot in the shoulder by someone driving by. And an 18-year-old died after being shot multiple times in the chest and arm around 10.50am on Tuesday.

“Here we go again,” said Chicago police superintendent Garry McCarthy. “We’ve had the same conversation over and over. What do we have to do? We have to hold criminals responsible.”