Media playback is unsupported on your device

Obama honours Martin Luther King

16 October 2011 Last updated at 18:26 BST

US President Obama has led a ceremony to officially open a memorial dedicated to civil rights leader Martin Luther King, in Washington.

The statue is situated near the spot where Dr King delivered his famous "I have a dream speech" in 1963.

President Obama said Americans were right to celebrate Dr King's dream and his vision of unity.