Because they’re much more a part of the government system and the government have the ability to investigate abuses and correct them more than they would within a private organisation that had very little to do with them.
Ability - perhaps. But what about motivation?
Government is much more motivated, generally speaking, to root out competitors (i.e. those private organisations) than to go through the painful process of identifying internal corruption.
And when you’re faced with the context that we’re talking about, where the official police are so corrupt and inept that you have to resort to a private police force, what are the official police going to do about the contractor’s brutality?
Very little. However, other contractors might help. The point is that if the brutality isn't officially sanctioned (and private brutality can also be officially-sanctioned), it can be resisted. In fact, private contractors in this context emerged precisely as means for resisting the private brutality of ordinary criminals.
You might need to explain that a bit further. Saying “the law is justice” and then saying immediately after that “with justice understood as the protection of property rights” sounds to me as though you’re saying the law should only reach as far as property rights, which I’m sure is not what you actually think.
Libertarians often say "all rights are property rights". I believe the same, given a broad understanding of "property rights" to include:
1. First and foremost, a right over one's own body. That right prohibits others from killing, assaulting, enslaving, conscripting, jailing for victimless crimes and prohibiting one from engaging in one's chosen profession without "license".
2. Right to use natural resources as "easement". For example, Britain is criss-crossed with countless public pathways. Those aren't owned by the public, but the public has a right to use them.
I must also stress that only
justly-acquired property rights are protected under libertarian justice. Thus if an aristocrat owns millions of acres because his ancestors received those as a grant from a king, those acres are probably not justly-acquired, and belong, rather, to the tenant farmers.
But even if this is what you think, who is going to ensure and protect these rights for you?
Well, various private agencies, specialising potentially in protection, insurance, detection, apprehension, conviction, adjudication and extraction of restitution from those attempting to violate my rights.
I agree, but will add that justice ideally would come from a regulated governmental source who have actually been trained in what justice is according to the law of the country.
I agree that justice ideally would come from trained people familiar with the law of the land. But why "government source"?
There is an inherent problem with designating one organisation ("government") as having monopoly over dispute resolution. Why would anybody expect government judges to be neutral when adjudicating disputes between ordinary people and government itself?
Would you trust the dispute resolution arm of Wal-Mart as the sole agencies entitled to resolve disputes between yourself and Wal-Mart? Would you trust them much more if you had one vote in millions to elect Wal-Mart's Board of Directors?
No one is going to fully agree on what justice is but it’s important that everyone is subject to the same laws I’m sure you’ll agree.
I do agree, but I don't think you are. Specifically, do you really think you are subject to the same laws as government officials? For example, do you have the same rights to arrest people as a police-officer? Do you have the same rights to confiscate people's property as an IRS agent?
As for "justice", while there may be differing interpretations (just as there are varied interpretations of the US Constitution), we should all agree on certain core aspects of justice.
For example, can we all agree that it is unjust to punish innocent people, i.e. people who have harmed nobody else?
Can we all agree that confiscating people's property when they have acted peacefully is wrong?
Can we all agree that "might makes right" is an unjust principle, and that, consequently, people shouldn't be entitled to property merely because they used force to secure it?
No country on Earth comes even close to respecting these broad principles in their system of so-called "justice".
Is it seriously only property rights that have any sway here? What about acts of violence? Causing someone distress through antagonism and threats? Noise disturbances, pollution…
Violence is a violation of one's property rights in one's own body (see above). Noise disturbance and pollution are also violations of property rights (in the sense of creating physical invasion that materially detracts from one's ability to enjoy one's property - technically a "nuisance").
Credible threats of using force counts as aggression.
However, "causing someone distress through antagonism" isn't necessarily a violation of property rights - either in current or in my desired societies.
But this can be left open to so many arguments such as with the use of marijuana - “if they have children and they spend a great deal of their time stoned, the children are certainly going to suffer because of it.”
Indeed. The point to take from this is that coming up with arguments is very easy. If we allow government to perform acts of aggression (e.g. jailing somebody for smoking a joint) merely because its spokespeople can articulate a plausible reason for the action,
nothing is safe.That is why the "harm principle" is far too vague and flexible.
What property does is delineate fairly precise, concrete, objective and ascertainable boundaries between different people. Without those boundaries, people and their peaceful projects ought to be safe from interference.
People actually can’t tell the difference because there is no such thing as universal justice.
Just because we don't have a perfect consensus over a perfect theory of justice doesn't mean we know nothing about it. As pointed above, certain principles ("it is wrong to punish innocent people", "it is wrong to forcibly take other people's property") are very broadly accepted and can often be applied with reasonable certainty.
Don't let the perfect be the enemy of the good.
This might have something to do with the huge difference in numbers of US soldiers compared to contractors.
Or the firepower placed in the hands of US soldiers (e.g. those controlling bombers and drones) compared with contractors. Or the nature of the mission - US soldiers are often tasked with killing people, while contractors tend to kill in (sometimes over-zealous) self-defence.
Free men are not equal and equal men are not free.
Government is not the solution. Government is the problem.