And where are the weapons to enforce this?

- "Political power grows out of the barrel of a gun"

If you can get to Mars then the US military can certainly do so. The government would certainly deploy some power structures (police force and/or soldiers) on Mars once a sizeable colony is built there (let's say couple hundred colonists that can self sustain themselves). To keep order and enforce laws and potentially, if the colony grows enough to have a functioning economy, to collect taxes.

You think they'd let random "mavericks" go there without a police and guns and laws?

The whole reason of spending trillions to get people there would be to exploit and control the shit out of the place...

We can put that another way: the odds of a populated Mars being an anarchist utopia are nil. Politics and power dynamics would remain.

Moving planets doesn't let you escape power-structures, and anarchism is still stupid - you still have to hope you get a good power-structure.

It appears you are setting yourself up to a series of sound disproofs, such as having to point out how communities with purpose without the damaging effects of power dynamics are more efficient, intelligent and effective.

Even in a frontier society there are power structures, and they are better off that way, no?