Obama with Ali boxing gloves
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Muhammad Ali memorial: Obama's video message

Barack Obama has released a video message on social to mark the funeral of Muhammad Ali.

The US president was unable to attend the memorial service of the man he calls a "personal hero" as it coincided with his daughter's high-school graduation.

Standing by a pair of gloves given to him by Ali as a memento, he described the boxer as "one of a kind".

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