John Seigenthaler, a longtime reporter and editor at "The Tennesseean" who also served as an aide to Robert Kennedy, has died. In 1961, Seigenthaler was knocked unconscious by a mob of Klansmen as he tried to rescue a freedom rider. Scott Pelley reports.
Prominent journalist John Seigenthaler dies at 86
What to Read Next
TV in No Time
'Agents of S.H.I.E.L.D.' Stars Chloe Bennet and Clark Gregg Introduce Season 3 Preview