United States July 20, 2019 11:30 pm Suspect Arrested in 11-Year-Old Boy's Killing Police say they’ve arrested the man who opened fire and killed an 11-year-old boy in Southeast D.C. News4’s Aimee Cho reports. Local 3:28 Social media and teens' mental health: A psychiatrist weighs in 1:41 DC-area police ramp up traffic enforcement in pedestrian safety campaign 3:05 ‘We need real liberation': George Washington University pro-Palestinian protest enters fifth day 2:17 GW asks to students to move pro-Palestinian demonstration 3:01 “It's 100% different”: Community reflects on emergency curfew at National Harbor