sci am 2011 discussed this

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送交者: kma 于 2020-07-10, 14:36:24:

回答: 纽约治安如何变好的 由 jhuang 于 2020-07-09, 00:53:32:

https://www.scientificamerican.com/article/how-new-york-beat-crime/

chicago recent years increased alot, though still lower than the 90s



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