The Oklahoma City bombing occurred on April 19, 1995, when a truck filled with explosives was detonated outside the Alfred P. Murrah Federal Building in Oklahoma City. The attack killed 168 people, including 19 children, and injured over 600 others, making it one of the deadliest acts of domestic terrorism in U.S. history. The bombing was carried out by Timothy McVeigh and his accomplice, Terry Nichols, as a protest against the federal government. In response, the U.S. government strengthened anti-terrorism laws and increased security measures at federal buildings across the country.