"not caring to act" would also be a very wrong thing and as one would expect from any other job, they should be fired for not working.
Add to that the increasingly common perception that, in exchange for doing your best to protect and preserve your community and your society, you're liable to be thrown under the bus by everyone from your own chain of command to the national legislature and executive for purely political reasons - and is it any wonder that more and more police officers are losing their willingness to risk themselves for a society which, from their point of view, no longer has their back but rather looks for any excuse to plant a knife in it?