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

A security guard for Republican presidential candidate Donald Trump removes Univision anchor Jorge Ramos from a news conference on Tuesday in Iowa. Charlie Neibergall/AP hide caption

itoggle caption Charlie Neibergall/AP

Donald Trump and Fox News are at odds again, after the Republican presidential candidate criticized host Megyn Kelly. "Donald Trump rarely apologizes, although in this case, he should," Fox chief Roger Ailes said. Mark Wallheiser/Getty Images hide caption

itoggle caption Mark Wallheiser/Getty Images