What kind of system makes it difficult as possible to use violence or coercion to obtain power without enshrining the use of violence or coercion in the system in the first place?
AnCap.
Finally an answer! You know what kind of answer I am looking for. Although, I wanted your answer, but you could of just summarized the Wikipedia page or anything else that outlays ancap.
It's the same answer you've been given over the past several responses.
Basically, The only hard and fast law in AnCap is the NAP, and instead of one monopoly provider of security and justice (the government) Those services are provided on the market.