In a This Day in History video, learn that on July 6, 1942, thirteen year-old Anne Frank went into hiding in Amsterdam. It was World War II and across Europe Nazis were shipping Jews to concentration camps. Anne and her family took refuge in a hidden room in the building of Otto Frank's office. Anne took her diary with her and recorded her experience. But in 1944, the Franks were discovered; Anne and all her family, except her father, perished in concentration camps. But the Diary of Anne Frank gave voice to the six million Jews who were silenced in the Holocaust.