Aleem Maqbool in Montgomery
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Retracing the Selma to Montgomery march 50 years on

President Obama will be in Selma, Alabama on Saturday to commemorate the 50th anniversary of the historic civil rights march which began there and made its way to Montgomery.

It was a march that changed American history.

The BBC's Aleem Maqbool has been retracing that path to find out what has and what has not changed in the past half century.

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