Московская Хельсинкская группа
The Soviet authorities encouraged other activists to emigrate. Lyudmila Alexeyeva left the Soviet Union in February 1977. Founding members of the Moscow Helsinki Group emigrated - Mikhail Bernshtam, Alexander Korchak and Vitaly Rubin. Pyotr Grigorenko was stripped of his Soviet citizenship in November 1977 while seeking medical treatment abroad.