The course contains 12 video-testimonies lasting four to six minutes each. The 12 testimonies include 10 witnesses to the persecutions and shootings and one testimony from a Jewish as well as one from a Roma escapee. These 12 witnesses were interviewed during Yahad - In Unum field investigations in Lithuania, Belarus, Poland, Ukraine, Moldova and Russia. Each page includes: 1. A questionnaire for students (10 questions). 2. An historical introduction of the locations studied (sourced from the archives) and on each witness and archival material. 3. A glossary. 4. Photographs of the witness, execution sites and of the Yahad - In Unum team during their investigation. At the beginning of each page, you will find the first name of the witness, his or her year of birth, the town or village in which the investigation was carried out and the interview number. For example, "T796U18" denotes the 796th witness interviewed during the 18th field investigation in Ukraine (T for Witness; LT for Lithuania; B for Belarus; P for Poland; U for Ukraine; M for Moldova; R for Russia). The line below indicates the themes covered by the witness in the short clip that will appear in the questionnaire. Each witness testimony is independent from the others.