[yummyfajitas]

That solution would aggravate people who view the police as being part of their "tribe". Assigning some police officers to admin work lowers their status, and in effect the status of your entire tribe. This would aggravate authoritarians on both the right (e.g. Gonzales) and left (e.g. Biden).

This is also the objection to giving free stuff to the homeless - it elevates the status of another tribe (do-gooders/bleeding hearts, the people handing out the free stuff) at the expense of your tribe (hard working/god fearing).

You could almost certainly get conservatives behind such a plan and get liberals to oppose it, if you did it in a way that elevated the status of a right-leaning tribe (e.g., boot camp/military living for the homeless).