The German documentary is dedicated to an influential figure of the 20th century: Petra Kelly spent her life campaigning for feminism, environmental activism, human rights and peace. She was a political co-founder of the Green Party in the 1970s and 80s and protested against nuclear missiles in West Germany at the height of the Cold War. Above all, however, she believed that one person could very well change the world and thus rose to become an icon of the peace movement.

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