Following high-profile police killings, many U.S. cities banned officers from using chokeholds and other neck restraints. The evidence for such bans, however, is limited. To test whether use-of-force policies prohibiting neck restraints are related to fewer police killings, we use three modeling approaches to analyze 2183 U.S. cities between 2009 and 2021. Police killings were lower in places that adopted neck-restraint bans and the bans were associated with less crime and fewer assaults on officers, net of controls. Because officer labor unions can affect use-of-force policies and the frequency of police killings, we also analyzed them, finding unionization increased the likelihood a city had a neck-restraint ban and had a null or negative association with police killings.

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颈部束缚禁令、执法人员工会和警察杀戮

在发生备受瞩目的警察杀戮事件后，美国许多城市禁止警察使用掐脖子和其他颈部束缚的方法。然而，此类禁令的证据有限。为了测试禁止颈部束缚的使用武力政策是否与警察杀人事件减少有关，我们使用三种建模方法分析了 2009 年至 2021 年间的 2183 个美国城市。在控制网络下，减少犯罪和减少对警察的袭击。由于军官工会会影响使用武力的政策和警察杀人的频率，我们也对其进行了分析，发现工会化增加了城市颁布颈部限制禁令的可能性，并且与警察杀人行为呈零相关或负相关。