By taking an integrated approach – limiting the hours during which alcohol can be sold, reclaiming public space, and improving the police and justice systems – the homicide rate was reduced to 21 per 100,000 in 2004. That is still high, but it is far below the rate of 55 per 100,000 in Detroit.
还有国家采取有效行动的其他实例。1993年，波哥大每100,000人发生80起谋杀。通过采取综合性举措&mdash;&mdash;包括限制卖酒时间、回收公共空间和改善警察及司法系统&mdash;&mdash;2004年谋杀率下降到每100,000人21起谋杀。上述比率依然很高，但远好于底特律的每100，000人55起谋杀的现状。