answers: Robert F. Kennedy
context: but a few weeks later he had changed his mind about entering the race. In early February 1968, after the Tet Offensive in Vietnam, Kennedy received an anguished letter from writer Pete Hamill, noting that poor people in the Watts area of Los Angeles had hung pictures of Kennedy's brother, President John F. Kennedy, in their homes. Hamill's letter reminded Robert Kennedy that he had an "obligation of staying true to whatever it was that put those pictures on those walls." There were other factors that influenced Kennedy's decision to enter the presidential primary race. On February 29, 1968, the </s> Robert F. Kennedy 1968 presidential campaign The Robert F. Kennedy presidential campaign began on March 16, 1968, when Robert Francis Kennedy (RFK), a U.S. Senator from New York who had won a Senate seat in 1964, entered an unlikely primary election as a challenger to incumbent Democratic President Lyndon B. Johnson (LBJ). After Johnson announced on March 31 that he would not seek re-election, Kennedy still faced two rival candidates for the Democratic Party's presidential nomination: the leading challenger Eugene McCarthy and Vice President Hubert Humphrey. Humphrey had entered the race after Johnson's withdrawal, but Kennedy and McCarthy remained the </s> would now be split between McCarthy and Kennedy. On March 31, President Johnson stunned the nation by dropping out the presidential race. He withdrew from the election during a televised speech, where he also announced a partial halt to the bombing of Vietnam and proposed peace negotiations with the North Vietnamese. Vice President Hubert Humphrey, long a champion of labor unions and civil rights, entered the race on April 27, with support from the party "establishment"—including the Democratic members of Congress, mayors, governors, and labor unions. Although he was a write-in candidate in some of the contests, Humphrey had announced
question: who was assassinated in 1968 while campaigning for the presidency