August 21, 1968: The Soviet-Led Invasion Of Czechoslovakia

Soviet tanks are surrounded by crowds of Czechs protesting against the invasion on Prague's Wenceslas Square on August 21, 1968.

Soviet soldiers try to extinguish a burning tank set on fire by protesters near the Czechoslovak Radio headquarters in Prague.

Invading Soviet tanks with white markings deploy near the Communist Party headquarters in Prague.

A Czechoslovak woman talks to Soviet soldiers on a tank as she protests against the invasion in Prague.

Young women watch as tanks approach the state radio headquarters.

Buses and trucks used as a barricade by protesters were reduced to rubble by fire and Soviet tanks.

A photographer approaches a Soviet tank to take a photo on central Wenceslas Square.

Protesters throw stones at the Soviet tanks entering Prague.

A Soviet tank rams a city bus after protesters set up a barricade to block Soviet forces near the Czechoslovak radio headquarters.

Soviet tanks and armored vehicles guard an area of Republic Square in downtown Prague.

Mourners attend the funeral of 20-year-old Milan Kadlec, who was killed during the invasion.

A Russian-language banner in the city of Plzen, in western Czechoslovakia, reads "Occupiers Go Home."