What's Wrong with Differential Punishment?

Half of the drug offenders incarcerated in the United States are black, even though whites and blacks use and sell drugs at the same rate, and blacks make up only 13 per cent of the population. Non-comparativists about retributive justice see nothing wrong with this picture; for them, an offender's desert is insensitive to facts about other offenders. By contrast, comparativists about retributive justice assert that facts about others can partially determine an offender's desert. Not surprisingly, comparativists, especially comparative egalitarians, contend that differential punishment is retributively unjust. I agree with this assessment, but take issue with the reasons egalitarians cite in its favour. In this article, I argue that differential punishment violates retributive justice because it contributes to structural racial oppression. Over the course of developing and defending this claim, I identify the shortcomings of both comparative egalitarianism and respectarianism, which is the most popular and plausible brand of non-comparativism.