US activist and singer Pete Seeger dies at 94

President Obama has paid tribute to U.S. folk singer and political activist Pete Seeger, who has died at the age of 94. He was blacklisted by the U.S. Government in the 1950s because of his political activism.

Obama praised his ability "to stand up for what's right and speak out against what's wrong".

Alan Fisher looks back at his life and work.