Russia’s oldest human rights organization, the Moscow Helsinki Group, has chosen three members to succeed the late Lyudmila Alexeyeva this week.

Alexeyeva, who was a driving force behind the Soviet civil-rights movement, died at age 91 on Dec. 8, 2018. Alexeyeva and other dissidents founded the Moscow Helsinki Group in 1976 to monitor Soviet compliance with the 1975 Helsinki Final Act, an agreement that included guarantees of basic freedoms and was intended to improve relations between the Communist bloc and the West.