Transgressor

a person who commits a transgression.

a transgression is the breaking of rules, laws or social norms.

a criminal commits a transgression by breaking laws accepted by society.

but rules are relative.

many of the same stories that describe a police person pursuing a criminal could be rearranged to describe a gang member pursuing someone who has broken the rules of the gang.

what is a transgression to one person is not necessarily a transgression to someone else

there can also be situations where a person can commit a transgression by their very existence. By being something the society finds unacceptable.

the existence of a transgressor implies the existence of rules that are being broken and to society that has those roles.

a transgressor is any person that some group of people thinks should be punished or killed.

the person who inflicts the punishment is the enforcer.

A person is often both a transgressor and an enforcer.depending on the perspective.