I do not exactly label myself an adherent of #anarchism, but I am intellectually curious: I would very much like to know if social harmony might not require Law.

That is what we are taught, as Americans raised and schooled and entertained with conventional American values: society is impossible without Law, without obedience.

I remember to this day having a liberal political science teacher in high school, a fellow I appreciated because he assigned an entertaining variety of texts (including a somewhat goofy 1970s environmentalist tract, Ernest Callenbach's Ecotopia, https://en.wikipedia.org/wiki/Ecotopia) who told a story of an animatronic Abraham Lincoln at a Disney park, programmed to tell visitors to obey the law.