"Law" has always meant what those who hold authority over its enforcement says it means. Its origins came from whatever the King decreed, as he was the one who held legal authority at the time.

That system was never intended to do anything other than exert an entity's will over others via threat of physical violence for disobeying. It was never meant to "uphold justice", "protect the people", or whatever moralistic tripe the current ruling class who assumed control of its current manifestation says it means and just because a broken clock is right twice a day doesn't mean the clock works.

We can have mutually agreed upon rules and regulations but that authority to dictate who must follow it has to come from the bottom up. Those who don't should not be forced into the arrangement against their will but neither should anyone have to associate with those who decide to not abide by it. Other ways of governing ourselves is possible. We know this because history tells us so, as explained by anthropologist David Graeber in many of his works.