While studying as a poli-sci major I encountered one of the most nonsensical political ideas I'd ever seen, unilateral disarmament. The idea would be for a country to do something like give up their nukes or even their entire military. This is supposed to automatically make the country safer by reducing the risk of accidents, making diplomacy more important, and preventing a leader from going rogue.
It's also nonsense.
This only works in a world full of angels or if there's another super power whose skirts you can hide behind.
The same is true with defunding the police. The idea that it will automatically make people safer only works in a world full of angels.
Moving some resources to other means of addressing issues is one thing. Blowing up law enforcement is another.