The Nazis systematically sought to weaken the resistance potential and opportunities of the Jews of Central and Eastern Europe. The early "Judenräte" were foremost to report numbers of their Jewish populations, clear residences and turn them over, present workers for forced labour, confiscate valuables, and collect tribute and turn these over. Failure to comply would incur the risk of collective punishments or other measures. Later tasks of the "Judenräte" included turning over community members for deportation. Ultimately, these policies and the cooperation of Jewish authorities led to massive Jewish deaths with few German casualties because of the minimal resistance. Once under Nazi control and checked for weapons, large numbers of Jews could ultimately be easily murdered or enslaved. The sadness of the catastrophically large number of deaths because of this lack of resistance led to the saying "never again".