United States Senate bombing: A bomb explodes inside the United States Capitol. No one is injured, but an estimated $250,000 in damage is caused.

The 1983 U.S. Senate bombing was a terrorist attack that took place at the United States Senate on November 7, 1983, as a protest against United States military involvement in Lebanon and Grenada. The attack led to heightened security in the DC metropolitan area, and the inaccessibility of certain parts of the Senate Building. Six members of the Maoism Armed Resistance Unit, also known as Resistance Conspiracy, were arrested in May 1988 and charged with the bombing, as well as related bombings of Fort McNair and the Washington Navy Yard which occurred on April 25, 1983, and April 20, 1984, respectively.

The United States Capitol, often called the Capitol or the Capitol Building, is the seat of the United States Congress, the legislative branch of the federal government. It is located on Capitol Hill at the eastern end of the National Mall in Washington, D.C. Although no longer at the geographic center of the national capital, the U.S. Capitol forms the origin point for the street-numbering system of the district as well as its four quadrants. Like the principal buildings of the executive and judicial branches, the Capitol is built in a neoclassical style and has a white exterior.