 Given that the Second Polish Republic was a <unk> state , German policies and propaganda also sought to create and encourage conflicts between ethnic groups , <unk> tension between Poles and Jews , and between Poles and <unk> . In <unk> , the Germans forced Jews to help destroy a monument to a Polish hero , Tadeusz <unk> , and filmed them committing the act . Soon afterward , the Germans set fire to a Jewish synagogue and filmed Polish <unk> , portraying them in propaganda releases as a " vengeful mob . " This divisive policy was reflected in the Germans ' decision to destroy Polish education , while at the same time , showing relative tolerance toward the Ukrainian school system . As the high @-@ ranking Nazi official Erich Koch explained , " We must do everything possible so that when a Pole meets a Ukrainian , he will be willing to kill the Ukrainian and <unk> , the Ukrainian will be willing to kill the Pole . " 
