In 1993, the U.S. Holocaust Memorial Museum was dedicated in Washington, D.C., to honor victims of Nazi extermination.
In 1970, millions of Americans concerned about the environment observed the first “Earth Day.”In 1994, Richard M. Nixon, the 37th president of the United States, died at a New York hospital four days after suffering a stroke; he was 81.
On April 22, 2000, in a dramatic pre-dawn raid, armed immigration agents seized Elian Gonzalez, the Cuban boy at the center of a custody dispute, from his relatives’ home in Miami; Elian was reunited with his father at Andrews Air Force Base near Washington.In 2004, Army Ranger Pat Tillman, who’d traded in a multi-million-dollar NFL contract to serve in Afghanistan, was killed by friendly fire; he was 27.In 2005, Zacarias Moussaoui pleaded guilty in a federal courtroom outside Washington, D.C.