On August 21, 1968 Soviet-led Warsaw Pact troops invaded Czechoslovakia, crushing the Prague Spring and ushering in a long period of political and moral decline. More than 130 people died during the invasion and thousands fled the country in the years that followed. The late Czech filmmakers Jiří Menzel and Miloš Forman share their personal memories of that fateful night, reflecting on the shock, fear, and surreal experiences.