On Aug. 20, 1968, Soviet-led Warsaw Pact troops invaded Czechoslovakia to halt reforms in Prague, surprising the world and swiftly taking control. The invasion reinstated a pro-Soviet regime, quelling liberalization efforts and enforcing censorship This year, a newly released film, Vlny (The Waves), will commemorate this historic event. The film immerses viewers in 1960s Prague, highlighting student revolts and rock and roll. In the Czechoslovak Radio newsroom, led by Milan Weiner, young Tomáš navigates the dangers of secret services. Premieres in Czech cinemas Aug. 15.