U.S. presidential candidate Robert F. Kennedy was murdered in June 1968. It was less than five years after his older brother, President John F. Kennedy, was also assassinated.
Sirhan Sirhan was convicted of the crime, but many - including Kennedy's friend Paul Schrade - suspect another gunman was involved.
Schrade was also shot that night and has been telling Witness History why he’s campaigning for the case to be reopened.
Witness History: The stories of our times told by the people who were there.