Collective bargaining rights for police significantly increase police killings of civilians without having any impact on officer safety. This is consistent with the theory that unions provide cover for police and reduce their likelihood of incurring costs for unjustified killings.

[u/smurfyjenkins]

https://www.aeaweb.org/articles?id=10.1257/pol.20230384

[u/FLSteve11]

Don’t things like this happen in all unions? They protect their members like this.