<prompt> Translate the following text to EnglishKatika kesi ya pamoja ambayo ilifikia makubaliano mwishoni mwa mwaka 2000, alifaulu kubadilisha hali za ukandamizaji za kufungwa katika magereza ya Philadelphia.  <response>: In a class action that concluded in a settlement at the end of 2000, he succeeded in changing the oppressive conditions of confinement in Philadelphias prisons. 