Critical Resistence: http://criticalresistance.org/
International Conference on Penal Abolition (ICOPA): http://www.actionicopa.org/
Empty Cages Collective: http://www.prisonabolition.org
The Freedom Archives: http://freedomarchives.org/
Black & Pink: http://www.blackandpink.org/
PARC: www.prisonactivist.org
The Real Cost of Prisons: http://www.realcostofprisons.org