Abdullah Kurdi, father of 3-year-old Aylan and his brother, Galip, age 5, whose drowned bodies both washed up on a Turkish beach. Mehmet Can Meral/AP hide caption

itoggle caption Mehmet Can Meral/AP

Washington Post Iranian-American journalist Jason Rezaian, seen here with his wife, Yeganeh Salehi, has been held prisoner since he was arrested in Tehran last July. On Thursday, a powerful Iranian politician said of a potential prisoner swap, "That's one way." EPA/Landov hide caption

itoggle caption EPA/Landov

On Thursday, balloons and flowers were in front of the Roanoke, Va., studios of WDBJ-TV. A day before, WDBJ reporter Alison Parker and WDBJ photojournalist Adam Ward were killed during a live broadcast. Steve Helber/AP hide caption

itoggle caption Steve Helber/AP

People attend a candlelight vigil in front of the WDBJ-TV station in Roanoke, Va. a day after reporter Alison Parker and cameraman Adam Ward from the station were killed during a live broadcast. Don Petersen/AP hide caption

itoggle caption Don Petersen/AP

Reporter Alison Parker and photojournalist Adam Ward were killed by a gunman Wednesday morning while broadcasting live in Moneta, Va. WDBJ7 paid tribute to the two journalists by sharing this image on Twitter. WDBJ7 via Twitter hide caption

itoggle caption WDBJ7 via Twitter