Fifty two years ago on this day, August 28, 1963, Martin Luther King Jr delivered a speech that continues to inspire. The US civil rights activist's philosophy of non-violent struggle drove millions of African-Americans to fight racial discrimination in the 1950s and '60s. In the wake of the shootings of black citizens by white policeman in the town of Ferguson and the ensuing unrest that gave birth to the popular Black Lives Matter campaign, it seems that King's dream has been deferred.

This isn't to suggest that King's campaign didn't produce results. Within a year if the speech, the Civil Rights Act was brought into effect, prohibiting discrimination on the basis of race, colour, religion, sex or national origin.

This clip shows King's speech from the steps of the Lincoln Memorial in Washington during one of the largest political demonstrations in US history.