A 1-year-old boy was shot to death overnight near a playground in Brooklyn. Police said the child was sitting in a stroller with a group of people having a barbecue when gunfire erupted. The boy was identified as 1-year-old Davell Gardner Jr. Mayor Bill de Blasio held a moment of silence during Monday’s press briefing and said he was “heartbroken” over the child’s death. “We’ve got to take resolve out of every situation like this. We can never give up,” he said. “We can never give up on our children, we can never give up on our families, we can...