To treat the Nazi ghettoization of Jews during the Holocaust, this entry comprises three articles. Establishment of Ghettos surveys the types of ghettos created and reasons for their creation; Life in Ghettos treats the ways in which ghettoized Jews organized and conducted their daily lives; and Ghetto Police describes the role that Jews played in the enforcement of ghetto regulations. For further discussion, see Armed Resistance; Holocaust; Judenräte and Other Representative Bodies; Killing Centers; and Labor Camps.