The event in 1989 that is remembered as a key moment in the fight against oppressive regimes in Eastern Europe is the Fall of the Berlin Wall. Its demolition on November 9 marked the end of communist rule in East Germany and was symbolic of the broader collapse of communism across the region. The fall represented a significant defeat for the Soviet Union and was celebrated globally as a triumph for democracy and freedom. It led to the reunification of Germany and inspired movements for change in other Eastern European countries, ultimately contributing to the end of the Cold War.