The Nazi concentration camp was "worse than Dante's hell," Antoni Dobrowolski said in an 2009 interview. He was sent there for teaching young Poles. Nazi Germany, which invaded Poland in 1939, had tried to outlaw education beyond elementary age.
Aleksandr Isayevich Solzhenitsyn was a Russian writer, dissident and activist. He helped to raise global awareness of the gulag and the Soviet Union's forced labor camp system from 1918 to 1956. While his writings were often suppressed, he wrote several books. Solzhenitsyn was awarded the Nobel Prize in Literature in 1970. He was expelled from the Soviet Union in 1974 but returned to Russia in 1994 after the Soviet system had collapsed.