Andrew Pollack lost his daughter Meadow in the shooting at Marjory Stoneman Douglas High School. Instead of waiting for lawmakers and school officials to agree on the appropriate response to the tragedy, he's getting to work on his own initiative. He shared information about his new Children’s Lives and School Safety campaign on social media last week. Unlike Parkland student activists who have spent their time demonizing the NRA and rejecting recent congressional efforts to boost school security because the bills don't mention the word "gun," Pollack supported the STOP School Violence Act. The bipartisan legislation improves communication between local...