In a statement, the Terminator, who is married to Kennedy Shriver's daughter Maria, notes the campaigning socialite's devotion to the Special Olympics was her greatest legacy.
He says, "Inspired by her faith in God... she was on a life-long mission to expand opportunities for those with intellectual challenges and to prove that they are capable of great achievements.
"Apart from her family, her greatest legacy is the Special Olympics, which started as a summer camp in her backyard in 1962, and has grown into a global movement and organization that has transformed the lives of hundreds of millions of people."
Kennedy Shriver, 88, died on Tuesday morning in Massachusetts.
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