Twenty years ago , on April 19 , 1995 , Timothy McVeigh set off a massive bomb in Oklahoma City . He was killed by police officers and his accomplice Terry Nichols after they had planted the device at an abandoned building that contained fertilizer bombs.
Twenty years ago , on April 19 , 1995 , Timothy McVeigh set off a massive bomb in Oklahoma City . Deborah Lauter and Mark Pitcavage : Right-wing extremism should still be taken seriously .