Oklahoma City bombing
On April 19, 1995, anti-government extremist Timothy McVeigh detonated a truck bomb in front of the Murrah Federal Building in Oklahoma City, Oklahoma to retaliate against the federal government for its handling of the Branch Davidian standoff in Waco, Texas in 1993. The blast destroyed the building, killing 168 men, women and children and injuring hundreds more. More than 20 years later, the attack remains the worst act of domestic terrorism in U.S. history and has inspired later extremist violence, with McVeigh hailed as a macabre hero for right-wing extremist causes. McVeigh was executed by lethal injection in 2001. Terry Nichols, a key co-conspirator, was sentenced to life in prison.