Behind every law is the death penalty. If you do not pay your taxes, a government lien is placed on your property and/or accounts. These things can be frozen and seized. Armed people will show up to enforce the edicts, and any attempts to ignore them or remove them will be met with force by them - as well as likely detainment. Continuing to escalate the situation results in, effectively, death.
From the smallest fine to the greatest capital offense - each is simply a means of appeasing the force of law in lieu of the death penalty. Because laws are supposed to be set by the citizens of society, the idea that everyone showing up outside your house and killing you because you didn't pay them enough for the right to live in your home without them killing you is argued as just. The ability to accept punishments less than death on your part makes them even more righteous in their course and obscures the true nature of law.
Thus - the question comes down to: "What laws are so important that breaking them must be enforced up to and until the death penalty for disregarding the concept of law, itself?"
If someone believes that it is the responsibility of a farmer in a field to yield, to the citizens of a nearby town, the produce from his harvest under the penalty of law... then they are effectively saying that it is right and just for a group of people to declare themselves a lawful government and to, then, set out upon the lands around them and promise death to those who do not give them the fruit of their labor. They can argue their righteousness by saying they gave the farmers polished stones in exchange - but when the farmers are not free to decline the exchange or negotiate a higher exchange, then the whole ordeal is a farce.
This strikes back to "what is a lawful government?" Who decides what range it should exist within? How would one go about challenging the legal right of a lawful government to reign over them?
Perhaps governments... as we know them... are due for a re-thinking, entirely. Perhaps 'law' should be re-thought, considerably, as well as the very notion of 'citizen." But that is a long way away, yet.