To some extent, you have to separate, because you're talking about state police and the federal constitution. State police don't represent the federal government, nor are they paid by them.
The state can be harmed - to use your example, a corporation is an entity created by statute that doesn't have a physical body. However, a corporation can be harmed by theft
, or defamation, or in other ways. The state can also be harmed by a person's actions - taken to the extreme, a person's rejection of the state's ability to make and enforce laws can lead to treason and anarchy. Laws exist to avoid this outcome.
Police officers, judges, prosecutors and public defenders are all paid by the state, but they all have very different functions. Police officers protect and serve the public and work to preserve order. Judges interpret the laws and make sure that everyone is treated equitably (whether fair treatment benefits the individual, the state, society as a whole, or all of the above). Prosecutors work for the public justice
, and public defenders work for their individual clients - the everyman. Unlike a police officer, a public defender *does* have an obligation to individual citizens - each client that he represents. Any one of those people who takes money from someone through coercion and violence is looking at criminal charges, just as you or I would.
Although I've heard of Lysander Spooner, I'm afraid I'm not terribly familiar with his works.