Michael Johnson sensed the weight of the moment building, as if a shot clock was ticking deep inside his mind. The crowd around him was swelling -- tens of thousands of people were in Selma, Alabama, on March 7, 2015 -- and they all wanted the same opportunity he was receiving: a chance to shake the hand of President Barack Obama. Johnson knew how blessed he was to be part of the VIP entourage that would accompany Obama as his hometown celebrated the 50th anniversary of the historic Bloody Sunday
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