The underground

5. 1. - 21. 8. 1968 - The Prague Spring, 21. 8. 1968 - Invasion of the Warsaw Pact troops, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia, 1. 1. 1977 - Declaration of Chart 77, 1948 - 1955 - Politic lawsuit in the Stalin age and 1 more anniversaries

19. – 21. 11. 1968 – The three-day student strike and other displays of civil r

17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia, 1. 1. 1977 - Declaration of Chart 77, 29. 6. 1989 – Zveřejnění manifestu Několik vět, 1990 - 1991 - Odsun sovětských vojsk z Československa, 1968 - 1970 - Second renewal of Junák

21. 8. 1968 - Invasion of the Warsaw Pact troops, 1989 - The fall of the iron curtain

1989 - The fall of the iron curtain, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia, 1. 1. 1977 - Declaration of Chart 77

1. 1. 1977 - Declaration of Chart 77, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia

21. 8. 1968 - Invasion of the Warsaw Pact troops, 1. 1. 1977 - Declaration of Chart 77, 1989 - The fall of the iron curtain

1976 – The Plastic People of the Universe trial, 1. 1. 1977 - Declaration of Chart 77, 21. – 28.3.1969 – Disorders related to the celebration of Czech hockey team’s

17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia