Robert F. Kennedy, Jr. and his wife Cheryl Hines, center, arrive for the Celebration of the Life of Robert F. Kennedy at Arlington National Cemetery in Arlington, Wednesday, June 6, 2018. Former President Bill Clinton and members of the Kennedy family are marking the 50th anniversary of Robert F. Kennedy’s death. Kennedy, a former attorney general and presidential candidate, was assassinated 50 years ago at the age of 42. The Navy veteran is buried at Arlington near his brother, former President John F. Kennedy. (AP Photo/Cliff Owen)