What makes some human rights campaigns for the physical integrity rights of prisoners more effective than others? Despite various normative arguments condemning these practices, only limited systematic analysis documents the relative effectiveness of different arguments on individuals. This is surprising, because the success of human rights campaigns depends on getting individuals to care about and support policy positions that protect human rights. We constructed an experiment to compare the effects of six different arguments against prisoner abuse and torture. We found (...) that an argument which emphasized the suffering of the prisoner had a consistently positive and significant effect on opposition to torture and prisoner abuse. However, this effect was largely contingent on subjects’ political ideology. Political conservatives actually became less opposed to torture, on average, after reading the same argument emphasizing the prisoners’ suffering or the sacredness of human beings. (shrink)