Oklahoma City bombing refers to the bombing of the Alfred P. Murrah Federal Building, in Oklahoma City on April 19, 1995. The bombing was done by means of a rental truck filled with an explosive. Timothy McVeigh was arrested by Oklahoma state police the day of the explosion. In his trial, the U.S. Government asserted that the motivation for the attack was to avenge the deaths of Branch Davidians at Waco, Texas, who McVeigh believed had been murdered by the U.S. Federal Government. The explosion occurred on the anniversary of the Waco incident.
There were 168 dead from the two blasts, which made it the worst terrorist attack on U.S. soil prior to the September 11, 2001 Terrorist Attack. The remains of the half-destroyed Federal building were demolished in May 1995.
There is now a giant memorial to the bombing on the site of the Murrah building. The memorial includes a large reflecting pool, two large "doorways", a museum, and a field full of chairs, one for each person lost. Some legislation was also introduced following the event, notably the Antiterrorism and Effective Death Penalty Act of 1996.