The Pied Piper of Hamelin
Hamelin (deutsch: Hameln), Germany --
So the story goes: a rat catcher showed up in the town of Hamelin in the 13th century and offered to rid the townspeople of a plague of rats they were suffering from at the time. After agreeing on payment, he produced a wind instrument and began playing. As he marched down the streets, rats came out of the woodwork and followed him as he left town and into the neighbouring Weser river, where the rats all drowned. The town however reneged on their promised payment. So a while later he returned to town, and repeated his trick. Only this time it was the children that followed him out of town, never to be seen again. The story may allude to a forced "recruitment" drive for emigration to eastern Europe.