Filmmaker Laura Poitras discusses her new documentary which traces the remarkable life of the artist-activist and the impact of her battle against the US opioid crisis.
After building his reputation covering the US civil rights movement in the 1960s, the photographer went on to produce some of the most enduring images of the past century.
Activists and campaigners are fighting back against new laws that would seriously undermine the ability to take industrial action, calling it an attack on fundamental workers' rights.
