The Beatles, shown with Ed Sullivan on stage Feb. 9, 1964 before their TV performance on his show. (AP Photo)
In this Dec. 13, 1993 file photo, Kurt Cobain, lead singer for the Seattle-based band Nirvana, performs during the taping of MTV's Live and Loud Production in Seattle. (AP Photo/Robert Sorbo)
President Lyndon B. Johnson, center, meets with Civil Rights leaders Martin Luther King, Jr. left to right , Whitney Young and James Farmer on January 18, 1964. (Courtesy of LBJ Library photo by Yoichi Okamoto)
Robert Moses, one of the leaders of the SNCC training students as part of the Mississippi Summer Project. The project aims to train students to register Black voters who have been denied the vote by discriminatory Jim Crow laws. (Steve Schapiro/Corbis)
Young Beatles fans picket with Ringo for President sign as the GOP convention got under way in July 1964. Convention goers say with formidable lead piled up by Senator Barry Goldwater, it's doubtful if Mr. Starr has much of a chance for the nomination. (Bettmann/CORBIS)
Boxer Cassius Clay later known as Muhammad Ali playfully hits The Beatles while at his training camp. From left to right, Paul McCartney, John Lennon, Ringo Starr, and George Harrison.(Bettmann/CORBIS)
UC philosophy student Mario Savio became the leader of the Free Speech Movement after exhorting protesters from atop a car in 1964. (Duke Downey/San Francisco Chronicle/Corbis)
1964 poster promoting the PBS American Experience.
In 194 the Bonhomme Township Democratic Organization and the Robert Snyder election campaign have each rented half of a building in St. Louis. Members of each organization tack up posters for opposing candiates, particularly for Johnson and Goldwater.(Bettmann/CORBIS)
Ray Incorvaia reached into a row of chairs behind him Saturday and held the hand of his wife, Dawn, just as an instructor told the class of hopeful archers that it didn’t really matter if their arrows struck a bull’s-eye.