I thought I was providing one, in the form of the utilitarian argument that it's better for some people to be scared of police than for everyone to be scared of

I thought I was providing one, in the form of the utilitarian argument that it's better for some people to be scared of police than for everyone to be scared of each other. You can disagree with utilitarian ethics, but it's not a rhetorical fallacy to promote them, and certainly not when presenting them as "the least bad option."