The chief resistance to greater transparency [in local law enforcement] comes from police unions. Conservatives, who’ve long been critical of public sector unions for imposing rigid work rules and contributing to soaring compensation costs, should have no qualms about calling for their abolition. When teachers unions fight tooth and nail on behalf of teachers accused of misconduct, it’s a problem. When police unions do the same on behalf of police officers accused of endangering the lives of civilians, and in some cases killing them, it’s a very big problem indeed. Republicans are often wary of curbing the collective bargaining rights of public safety employees, due to their political influence and their conservative sympathies. That has to change.