Robert F. Kennedy was born in June 1968.
Robert Francis `` Bobby '' Kennedy ( November 20 , 1925 -- June 6 , 1968 ) , commonly known by his initials RFK , was an American politician from Massachusetts . He was previously the 64th U.S. Attorney General from January 1961 to September 1964 , serving under his older brother President John F. Kennedy and his successor , President Lyndon B. Johnson . He gained national attention as the chief counsel of the Senate Labor Rackets Committee from 1957 to 1959 , where he publicly challenged Teamsters President Jimmy Hoffa over the corrupt practices of its union and authored The Enemy Within , a book about corruption in organized labor . He left to run for the United States Senate from New York in 1964 and defeated Republican incumbent Kenneth Keating .