Earlier quoted context omitted.
Many/most supporters of unions argue that police should not be able to form or join unions. "Cops are not workers" is a common phrase I've seen.
I take it a step further and reject all public sector unions. Teachers, cops, firemen, dog catchers, you name it. There’s just too many perverse incentives for politicians to give in to union demands in exchange for buying votes. Unlike the private sector, the ones agreeing to the union demands care little about the long term costs associated since they’re not the ones paying them.
If politicians were looking to maximise votes, wouldn't they target parents not teachers: there's a lot more parents than teachers.