From left: Martin Luther King III and Dexter Scott look on as Yolanda King, daughter of Martin Luther King III, shakes hands with Senate Minority Leader Harry Reid. Photograph: Drew Angerer/Getty Images

When Martin Luther King dreamt, he wished for a world of equality where the content of one’s character would trump the colour of one’s skin. An ugly s(...)

Publisher Arianna Huffington told students at Smith College in Northampton, Massachusetts:  “What I urge you to do is not just take your place at the top of the world, but to change the world”. Photograph: Oli Scarff/Getty Images

It is that time of year when famous people put on baggy black capes and peculiar hats in order to hold forth on university lawns to thousands o(...)