|Vilnius, Lithuania Old Town Skyline|
Photo by DAVID ILIFF. License: CC BY-SA 3.0. Courtesy of Wikipedia
By late summer of 1941, the SS Einsatzgruppen, Hitler's elite killing squads, began taking Jewish men, women, and children to large pits in the Ponary Forest outside the city to shoot them. Tens of thousands of Jews as well as Poles and Russians were murdered there.