Criminality can be a response to the rules of the governing body. For example, thieves may be responding to taxation or lack of employment. However, psychologists may refute this idea. There are genetic factors that interplay with environmental factors that then result in criminal behavior. Murderers, for instance, may have a different brain structure that impacts their perception of human life. Even if one believed the state failed in terms of justice, not all people would turn to murder in response. Only those with certain biological factors and experiences might take a person's life.