March 12, 2013 4:16 pm Viewpoint With David L. Cohen David L. Cohen, the executive vice president of Comcast, talks about his new initiative to make Internet more accessible for families of all income levels. 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