[rramach]

> I'll go out on a limb, and say that the existence of police unions is not the most important factor behind police brutality, and the killing of people of colour by police, in the US.

Hard to say if it is the most important but it is a pretty important factor. See https://www.joincampaignzero.org/ for all research that indicates the unions are a key stumbling block.

[hef19898]

That is true. On a meta level, that is kind of what a police union should protect interests of the police force. Shows how this, be it unions or any other association, can backfire.