Charta 77

Etymology
From +. The number refers to the year 1977, when the document was written.

Proper noun

 * 1) Charter 77 1977 document criticizing the Czechoslovak government for failing to implement human rights provisions of a number of documents it signed
 * 2) Charter 77 Czechoslovak civic initiative introducing the document and demanding respecting human, civil and political rights of people by the communist government