Rev Jesse Jackson on Obama presidency and Luther King
15 July 2012 Last updated at 11:50 BST
The Rev Jesse Jackson said Rev Martin Luther King would "decry" the amount of violence and impoverished people in the USA and "too many expensive and unnecessary wars".
On a visit to London, the civil rights campaigner and Obama supporter, told Andrew Marr about the president's chances of winning a second term and spoke of his foreign policy.
He said of the Obama years: "We are better off today than we were four years ago."