I'd like to write more about this sometime but I think a lot of current society is just the evolved version of what you are talking about, and history has glossed over those elements.  Just think about the word "company".  Groups of people together advancing goals and defending their interests seems to be the human default.  The tightest-knit communities are those who have most recently been oppressed.  Orthodox Jews in NYC have their own security, EMS, etc. 

The state creates "communities" also through unions etc.  And to be honest they are way way way better at it than freedom-loving individualists.  We need to come out of our shells a bit IMO.   And in doing so we cannot appear like an angry militia or we will be crushed.  We value freedom and human rights, if the state is against that, let it be obvious.

tenuous

pony

It might be worth studying how security worked in the early days of the US, how was towns and farms kept secure from bandits?