This document is a formal appeal sent on December 9, 1978, by Charta 77 spokespersons Ladislav Hejdánek and Jiří Dienstbier to the Prime Minister of Czechoslovakia, Lubomír Štrougal. The letter protests the illegal and continuous police surveillance of Charta 77 signatories, specifically focusing on the treatment of writer Václav Havel. The authors describe how security forces blocked their access to Havel's apartment and effectively placed him under house arrest. The document details verbal and physical threats made by police officers against Havel following his attendance at a court hearing for fellow dissident Jiří Chmel. The spokespersons argue that these repressive measures violate domestic laws and contradict official government claims of handling the opposition solely through political means. They demand an immediate end to the systematic harassment of dissidents such as Petr Uhl and Jiří Hájek. This letter provides a crucial historical record of police brutality, the violation of civil liberties, and the organized resistance of the human rights movement during the normalization era in Czechoslovakia.