Minor offenders, gang members, and the poor are extremely unlikely to be aware of the punishments for the crimes which they commit so deterrence doesn’t have much effect there. Many crimes are a product of necessity (through poverty and drugs) and therefore can be reduced only by structural changes to the society, not by threatening punishment. The idea of a ‘short sharp shock’ is unconvincing. Labeling people as criminals at an early age actually causes them to perceive themselves as such and gives them fewer other options by placing them outside mainstream society. This leads to ‘deviance amplification’ where convicts increasingly commit more serious crimes as a result of their contact with law enforcement. [1]  [1] Becker, Howard S., ‘Labeling Theory’, from Becker Outsiders: Studies in the Sociology of Deviance, The Free Press, 1963,  , accessed 20 September 2011