A mob sexual assault on young female revellers on New Year's Eve turned Germany's celebrated tolerance of mass migration upside down. What happened and why was it hushed up? How has it changed the nation?

Michelle describes how the assailants, supposedly refugees, "touched us everywhere they could, between the legs and at our breasts". Police and media initially downplayed the incident, but as days went by, Germans learned that more than 1000 complaints of sexual assault and theft had been lodged, with the alleged assailants being described as North African and Middle Eastern. Subsequently, the generosity that has seen Germany embrace more than a million new migrants in the past year, otherwise known as "Welcome Culture", is wearing thin.