Comment by qball

The converse is also true, however.

If, for example, society sees fit to deprive me of my right to security (for instance, perhaps it deigns to throw me in jail if I defend myself against a home invasion), then society doesn't get to demand I give my life for its security.

In this way, it is society that has broken the contract with me, releasing me of my obligations to defend it. Most people who claim "duty and obligation to society" conveniently forget this is possible. By accident, I'm sure.