Maximilian Kolbe was a Polish priest who lived during World War 2. He sheltered 2000 Jews from the Nazis and spoke out against them on his pirate radio station. He was arrested and sent to Auschwitz concentration camp. When a man escaped from his barracks, the commander selected 10 men to starve as punishment. Kolbe volunteered to take the place of Franciszek Gajowniczek, who had a wife and children. Kolbe encouraged the men until he was the last alive, then was killed with a lethal injection. He was later canonized as a saint by Pope John Paul II for his selfless act.