On the 50th anniversary of his death, both loved ones and those influenced by Robert F. Kennedy are remembering his life and legacy

Robert F. Kennedy's Widow, Ethel, Lays a Rose on His Grave on 50th Anniversary of His Assassination

Only 42 years old when he was assassinated while running for president, the New York senator was shot after his victory speech to elated supporters in L.A.’s Ambassador Hotel after winning the California primary. Sirhan Sirhan, a 24-year-old Palestinian, ambushed Bobby as he made his way though the kitchen service area, shooting him in the head.

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His family and friends — including President Bill Clinton, daughter Kathleen Kennedy Townsend, and his grandson, U.S. Rep. Joe Kennedy III — remembered him Wednesday during a memorial service at Arlington National Cemetery in Virginia, where he is buried near his brother John F. Kennedy.

During the service his 90-year-old widow, Ethel, left a rose at his grave.

Daughter Kerry Kennedy also shared a moving tribute to her father on Twitter, sharing a photo of herself kneeling at his grave and writing “I miss my father every day, but I am strengthened to know the causes he believed in are still championed by brave activists today. His legacy and work are timeless.”

PEOPLE’s new special edition, The Kennedys: Jack & Jackie and Bobby & Ethel, remembering Robert F. Kennedy 50 years after his assassination, is available on Amazon, and wherever magazines are sold.

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Celebrities including Alec Baldwin, Mia Farrow and Tom Colicchio also shared their condolences and memories on Twitter.

Maria Shriver also shared a poignant Instagram about her uncle, not that his legacy continues to feel relevant even 50 years later.