and many individualist anarchists reject private property, a core principle of most natural law theories. Free association Free association (also called voluntary association) also implies the right of individuals to form those exact social contracts. This freedom to not associate means if the terms of a social contract become unacceptable to an individual member or sub-group(s) within a society, the discontented have the right to secede from the contract. They may also form new associations with others that more closely fit their needs. Mutual aid The principle of mutual aid, originally identified by Peter Kropotkin as arising from natural law, is that since evolution occurs in groupsnot individualsit is evolutionarily advantageous for members of a community to assist each other. The anarchist approach to building powerand structuring power relationshipsis derived from this evolutionary and biological imperative. In a nutshell the argument is that since individuals require the assistance of groups to self-actualize, individuals have a strong self-interest in the good of the community to which they belong. It follows that (freely associating) collectives of individuals working for mutual improvement and mutual goals must form the basis of any anarchist society, thus providing the sociological and economic imperative for the creation of social contracts capable of binding these self-selecting groups together. In a pre-revolutionary situation, the principle of "mutual aid" is the moral imperative that drives efforts by contemporary anarchists to provide material aid to victims of natural disasters; those that are homeless or poor, and others who have been left without access to food or clean drinking water, or other basic necessities. Enforceability Enforceability is one of the most controversial areas of anarchist law. Early writers such as Proudhon argued that it was legitimate for working-class people to self-organize against criminals who prey on the weak, a process which would unequivocally entail some degree of coercion. Decision-making Common techniques for decision-making, including decisions about the de facto laws themselves, among non-hierarchical societies include various forms of formal consensus, supermajority voting, "consensus minus one" and direct democracy. Anthropologist David Graeber argues that any community that lacks a centralized mechanism of force (a state) will naturally gravitate toward some form of consensus decision-making. Examples See also Voluntary association Polycentric law Privatization in criminal justice An Anarchist FAQ References Further reading External links Anarchist Studies Network Reading List on Anarchism & Law. Archived 22 May 2019. Issues in anarchism Philosophy of law