KGB to find them at home. In 1967, the campaign of this suppression increased under new KGB Chairman Yuri Andropov. After suppressing the Prague Spring, KGB Chairman Andropov established the Fifth Directorate to monitor dissension and eliminate dissenters. He was especially concerned with Aleksandr Solzhenitsyn and Andrei Sakharov, "Public Enemy Number One". Andropov failed to expel Solzhenitsyn before 1974; but did internally exile Sakharov to Gorky in 1980. The KGB failed to prevent Sakharov's collecting his Nobel Peace Prize in 1975, but did prevent Yuri Orlov collecting his Nobel Prize in 1978; Chairman Andropov supervised both operations. KGB dissident-group infiltration featured
KGB victim memorials visitors. Part of the cells, lock-ups and the corridor in the basement have been restored. The Museum of Genocide Victims was set up in Vilnius on 14 October 1992 in the former KGB headquarters (which had been used by the Gestapo during the Nazi occupation). The building also houses the Lithuanian Special Archive, where documents of the former KGB archive are kept. "The Black Door", a memorial at the former KGB building on Stabu Street in Rīga, was unveiled in 2003. The memorial, designed by artist Glebs Pantelejevs, is a half-open steel door and a commemorative plaque. A memorial and