I think those of us of an age to remember the impact of Muhammad Ali will have a better grasp of context.
Although his route to fame was as a boxer, his impact on American culture was far more important, with his ground-breaking attitude to conscription - how many seriously famous black men made a religious stand and refused to be drafted before Ali, as just one example.
He broke the stereo-typical mode of black athletes as being rather dopey, and 'knowing their place' - Ali absolutely did know his place, it was right at the top of popular culture and cutting-edge social change, and that is the reason for the mass of eulogies and memories that are coming out now.
Hopefully the message that Ali put forward - that Afro-Americans deserve dignity and respect - will carry on, and that will be his legacy.