Whether the Baldus study established an Equal Protection Clause violation by proving that decisionmakers in McCleskey’s case acted with discriminatory purpose.
Holding
No. Statistical disparities alone did not prove that the prosecutor, jury, or other decisionmakers in McCleskey’s particular case acted with a discriminatory purpose.
Reasoning
An equal-protection claimant must prove both discriminatory effect and purposeful discrimination. McCleskey offered no evidence specific to his own prosecution or sentencing showing that race influenced the decisions made in his case; instead, he relied entirely on statewide statistical evidence.
The Court accepted that statistics can sometimes establish discriminatory purpose, particularly in jury-selection cases and certain employment-discrimination cases. But capital sentencing differs because each sentencing decision involves a unique jury, a particular crime, and an individualized assessment of aggravating and mitigating circumstances. The Court concluded that an inference drawn from aggregate statistics cannot readily identify the motivation behind a particular capital sentence.
The State also lacked a practical way to rebut the study by explaining the relevant decisions. Jurors generally cannot be examined about the motives behind their verdicts, and requiring prosecutors to explain discretionary charging decisions made years earlier would intrude on the traditionally broad discretion of prosecutors.
Because criminal-law enforcement necessarily entails discretionary judgments, the Court required exceptionally clear proof before inferring that officials abused that discretion for racial reasons. The Baldus study showed, at most, a risk that race affected some capital decisions; it did not provide sufficiently strong proof that any decisionmaker in McCleskey’s case acted because of race.