At the start of 1942, Kovner released a manifesto in the ghetto, titled "Let us not go like lambs to the slaughter!", although the authorship has been contested. The manifesto was the first instance in which a target of the Holocaust identified that Hitler had decided to kill all the Jews of Europe, and the first use of the phrase "like sheep to the slaughter" in a Holocaust context. Kovner informed the remaining Jews that their relatives who had been taken away had been murdered in the Ponary massacre and argued that it was best to die fighting. Nobody at that time knew for certain of more than local killings, and many received the manifesto with skepticism. For others, this proclamation represented a turning point in an understanding of the situation and how to respond to it. The idea of resistance was disseminated from Vilnius by youth movement couriers, mainly women, to the ghettos of occupied Poland, occupied Belarus and of Lithuania.