I'm familiar with anti-trust theory. The idea of collusion reducing competition is fallacious because market competition is not a quantity, but a process by which goods and services are exchanged.

Price fixing and hiring agreements do not involve force, fraud, or misrepresentation- yet the regulation or prohibition thereof directly violates the property rights of the market participants.

I've read the Wikipedia entry you've linked to in its entirety, so I kindly ask that you will read this one: https://mises.org/daily/4397

The problem with libertarianism is that it starts with a tiny set of axioms, and then attempts to derive how the world should be. Any deviations from that are then taken as evidence that the world is wrong, unjust, etc. In reality, humans are hierarchical social creatures with complex dynamics, and you kind of have to play by the rules that other people set for you. In this case, a group of people broke the rules and some other people think they should be punished, and I think most of the people here have no problem with that.

"attacking my argument for being libertarian is argumentum ad hominem"

No. Saying that the framework you're basing an argument on is flawed isn't dismissing the argument because of a personal flaw of the person asserting something. It's saying that the core axioms/assumptions are flawed.

Maybe you over-identify with that ideology and are taking criticisms of the ideology personally since it feels personal, but it's not at all about you, it's about the ideas you're espousing.

Why do you distinguish force and fraud arbitrarily from collusion? Me bashing you over the head and taking your stuff is the ultimate freedom of action.

>Hiring agreements (collusion) do not involve force or fraud.

Hiring agreements are where an employer uses the power of their position (and those they are colluding with) to control their employees. I would argue this is just another form of 'force'. You don't need to physically harm someone to control them.

A shop that opens across the street from another shop doesn't "force" the other shop to lose money. Your definition of force is contradictory, as it leaves no room for anything that is not pre facto considered force.

I don't distinguish between a group of people colluding to beat someone up, and colluding to subvert the market by suppressing wages. I think it's entirely arbitrary to say that the state should use violence to prevent one kind of harmful activity and not the other.

What aspect of the market is subverted by hiring agreements? A price is what two parties agree to trade. Hiring agreements in no way prevent parties from agreeing to trade. McDonald's isn't subverting anything if they won't sell you a burger for 50 cents.