The cops only ever do anything good when they're working for a private paramilitary organization. Government workers on government business oppose the protagonist at every turn and then get rolled by the bad guys in like a day. The protagonist personally dislikes all of the politicians that he meets. It's not Ayn Rand: The Children's Book but it's not obvious left wing political fodder.
My guess is that libs latch onto Harry Potter because it's the only thing they've read that features a heroic narrative.
Ideally we could capture local school boards and start getting our people in administrative and teaching positions. Control of the curriculum is important but I think it's more important to have control of the personnel. Shitlibs reproduce by brainwashing kids. If that gets cut off at the source it would have all kinds of positive downstream effects.
It is obvious left wing fodder in that the bad guys are clearly Nazi/KKK stand-ins. In any case, the real angle is the worship of higher-ed. All the good guys--actually all of the developed adult characters--are professors at Hogwarts. Also note they aren't "teachers" like in a high-school, which makes clear we're dealing with a university stand-in.
The magic government appears to employ practically all of the magic-adults who aren't professors at Hogwarts in pointless make-work jobs, but this isn't depicted as a bad thing. Since magic or elfs do all the real work, the magic world is in effect a socialist utopia where as Marx predicted labor has become not only a means of life but life's prime want. The ineffectiveness of the magic government is more of a leftist critique of complacent liberal governance. The main good guy, Dumbledore, leads an underground antifa group that provides the only real opposition to the fascists who are always about to seize power. Basically the message is that University is the center of the world and the state should just obey leftist academics.