Violence was rising especially rapidly at the time in black central city areas, in part because of demographic changes: the coming of age of the baby boom generation and the peaking of south-to-north migrations. For these reasons the ghettos by the mid-1960s were home for an unprecedentedly huge population of young men, increasing percentages of whom came from broken homes without strong discipline. Young men, moreover, are always the group most susceptible to crime and violence.69 The decline in the number of manufacturing jobs in many of these areas further exacerbated racial tensions.
