- April 19 marks 20 years since the Oklahoma City bombing
- The bombing was carried out by domestic terrorists
- Today's domestic terror threats range from eco-terrorists to anti-government extremists
(CNN)On the morning of April 19, 1995, a man parked a rental truck packed with explosives in front of the Alfred P. Murrah Federal Building in Oklahoma City. At 9:02 a.m., the explosives detonated, killing 168 people, including 19 children.