The homicide figures are particularly noteworthy. Between 1964 and 1974 the homicide rate more than doubled, and in the late 1980s was at 1974 levels. Then in the 1990s it fell consistently. “Even with more than 2,800 killings from the attack on September 11, 2001, the homicide rate that year was more than 30% lower than the periodic peak rates that were the top portions of the 20-year cycle that began in the mid-1970s,”27 wrote Zimring. According to the Justice Department, the 1990s also saw declines of between 23 percent and 44 percent in rape, robbery, aggravated assault, burglary, auto
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