On April 2, 2021, a car rammed the north barricade outside the United States Capitol in Washington, D.C., along Constitution Avenue,[2] killing a Capitol Police officer and injuring another.[3] In response, the Capitol complex was locked down. Congress was in spring recess, so only a few members were present in the building during the attack.[4][5] The perpetrator, 25-year-old Noah Green, died at a hospital after being shot.[5] His Facebook posts did not indicate why he chose to attack the Capitol.[7]