In 1968, British university students clash with mounted police. There in support of their anti-war protest are scientist Stephen Hawking, and rock star, Mick Jagger. Socialist Czechoslovakia's fledgling democracy movement is suppressed by Soviet forces. Later at the Mexico Olympics a Czech medal-winner pointedly averts her eyes from the Soviet flag on the podium. The world is rocked again 20 years later. In 1987, David Bowie holds a concert on the west side of the Berlin Wall. We see young East Berliners ignore injunctions against public assembly to hear Bowie sing "Heroes".