If your relationship with management has broken down, you basically have two realistic options;
1 - go to a union if you are a member of one
2 - find a new job.
With regard to the Police, staying on the right side of the law is quite a good way of avoiding any trouble with them.
mmmm......it is quite a good way but did not serve Cliff Richard, Paul Gambacinni, Ched Evans, Guildford Four, Sam Hallam, Barry George, Paul Blackburn, Birmingham Six, Judith Ward, Winston Silcott, Sion Jenkins and many many others so well.
The police are of course great at what they do. It is just what they do that can be a problem.