Fifty years ago today, one of the greatest orators of modern times delivered his most impassioned plea.

At the march on Washington, August 28th 1963, Dr. Martin Luther King Jr. made his famous "I Have a Dream" speech. Rev. King spoke of his vision for an America in which all men, black and white, were treated equally; and one in which his children would be judged, not by the color of their skin, but by their character.

The United States of today is barely recognizable from Rev. King's time. Certainly racism still exists, equality often seems a long way off, but there's an African American sitting in the oval office — something that perhaps only very few would have dreamed possible fifty years ago.

Rev. King's "I Have a Dream" speech has echoed around the world, unconfined by America's borders, his vision of a just society for all has been an inspiration for five decades.

To mark the anniversary of that pivotal moment we've gathered together some of our favourite tributes to Rev. King:

How have you been affected by Rev. King's speech? Have you ever tried to commemorate his life through design? Let us know in the comments.