The death penalty has long been a source of debate and is perhaps the most litigated sentence in the United States. Arguments for the use of the death penalty point to “just deserts” or retribution, while arguments against its use point to its implementation, including how the death penalty is administered (e.g., via electrocution, lethal injection), the types of offenses that are eligible for the death penalty (e.g., murder, rape, treason), and the offenders who are sentenced to death (e.g., males, minorities). This latter concern is the subject of much research, to the extent that a number of U.S. Supreme Court cases have addressed this research, especially in the cases Furman v. Georgia (1972) and McCleskey v. Kemp (1987). Research has indicated that those who are sentenced to death share common characteristics, including gender, minority status, social class, geography, and victim similarities. Overwhelmingly, research has noted that, in general, those who kill white victims are the most likely to receive a death sentence, particularly black offenders who kill white victims. Also, males are more likely to receive a death sentence than females, low-income individuals are more likely to receive a death sentence than higher-income individuals, and committing a capital offense in a handful of counties in the United States increases the likelihood of a death sentence.
It is difficult to determine in most cases the reasons for this disparity. Outright discrimination by prosecutors, judges, and/or juries is a possibility, but the court system has made it extremely difficult for offenders to prove discrimination in their individual cases. Some researchers argue that the criminal justice system is stacked against minorities and the poor, by enforcing laws more forcefully in their neighborhoods and requiring financial resources to defend oneself (e.g., bail, defense attorneys). Regardless of the reason for disparate treatment in individual cases, the fact that disparate treatment exists is concerning in a country whose constitution emphasizes due process and equal protection under law.