Max Pearson presents a collection of the week's Witness History episodes including the story behind Mick Jagger and David Bowie's duet for Live Aid in 1985 and the Chinese artist who was jailed for his art inspired by the Sichuan earthquake in 2008.
He speaks to music journalist Alice Austin to explore other concerts in world history that have had a political impact.
Also, the American politician who first coined the phrase "drill, baby, drill" in 2008, the making of Back To The Future in 1985 and the trophy killing of Cecil the Lion in Zimbabwe in 2015.
Contributors: Bernard Doherty - former Live Aid press officer. Alice Austin - music journalist. Ai Weiwei - artist. Prof Andrew Loveridge - zoologist who studied Cecil the lion. Michael Steele - the former Lieutenant Governor of Maryland, who came up with the slogan "Drill, baby, drill!" Bob Gale - the co-writer and producer of the Back to the Future.
(Photo: Mick Jagger and David Bowie performing Dancing In The Street. Credit: Brian Cooke / Redferns)