Lisa Ling travels to Philadelphia, a city where seven people are shot each day, to meet the crusaders who are determined to end gun violence on their streets. As the activists battle on, Philly's citizens hope and pray that together, they can find peace.Lisa Ling travels to Philadelphia, a city where seven people are shot each day, to meet the crusaders who are determined to end gun violence on their streets. As the activists battle on, Philly's citizens hope and pray that together, they can find peace.