For 10 points, name this opposition movement from Communist Czechoslovakia, which takes its name from a manifesto criticizing the Czechoslovakian government.
A leading member of this political movement discussed the "parallel polis" in an essay. dedicated to a spokesperson for this group named Patocka who died of a stroke after eleven hours of interrogation. Members of this group formed a separate organization dedicated to monitoring abuses by police called the Committee for the Defense of the Unjustly Prosecuted, or VONS. A spokesman for this group wrote an essay about a grocer who hangs a sign bearing the slogan "Workers of the world, unite!" and became, like many other leaders of this movement, a leader of the (*) Civic Forum. The arrest of an underground band called the Plastic People of the Universe spurred the formation of this group, which was advocated in the essay "The Power of the Powerless,"and whose activism helped catalyze the Velvet Revolution. For 10 points, name this opposition movement from Communist Czechoslovakia, which takes its name from a manifesto criticizing the Czechoslovakian government.
A leading member of this political movement discussed the "parallel polis" in an essay.
Charter 77 [prompt on the Civic Forum before it is read, since there's overlap]