Not aware of a society without a judicial system. About 1% of the population could be considered psycho paths. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC40

Not aware of a society without a judicial system. About 1% of the population could be considered psycho paths. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4059069/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4059069/ So there is a high probability of anti-social behaviour well below 10,000 people.