Also known as: disproportionate impacts · disparate impact
Written by attorneys · grounded in primary & secondary sources — see below
A statistical disparity in the effects of a facially neutral law or policy on members of a protected class. Such a disparity supplies relevant circumstantial evidence of intent but does not by itself establish an equal protection violation.
Dynamic Solutions adopts a hiring rule that gives absolute preference to veterans for analyst positions. Deborah Dunn, a qualified nonveteran woman, is passed over even though she scores higher than several male veterans. The preference produces a severe gender imbalance in new hires. Because the company adopted the rule to reward military service rather than to exclude women, the gender disparity supplies no equal protection claim.
The City of Rock Hill requires all police applicants to pass a written aptitude test. Destiny Davis and other Black candidates fail the test at substantially higher rates than White candidates. The city adopted the test to measure job-related skills and has no evidence that officials designed or used it to disadvantage minority applicants. The racial disparity alone does not render the test unconstitutional.
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During jury selection in Damian Decker's criminal trial, the prosecutor uses peremptory strikes to remove every Black venire member. Decker objects that the strikes produce a racially disproportionate impact on the jury pool. The pattern of strikes supplies circumstantial evidence of intent that the trial court must evaluate under the three-step Batson framework.
The Village of Arlington Heights refuses to rezone a parcel for multifamily housing. Denise Donovan, a Black resident seeking affordable units, shows that the denial will disproportionately exclude Black families from the area. The village's stated concern for preserving single-family character supplies a nondiscriminatory explanation that defeats the equal protection claim absent proof of racial purpose.
Dorothy Daniels is sentenced to death after a capital trial. Statistical studies show that Black defendants receive the death penalty more often than White defendants in the jurisdiction. Daniels offers no evidence that the prosecutor or jury acted with racial purpose in her individual case. The general disparity does not establish an equal protection violation.
Danielle Dixon challenges a state intestacy statute that treats children born outside marriage differently from marital children. She demonstrates that the rule produces a racially disproportionate impact on Black families. The statute's classification rests on legitimacy rather than race, so the racial disparity supplies no independent equal protection claim.
No. A facially neutral law or policy that produces a statistical disparity on a protected group does not violate equal protection without evidence of discriminatory purpose. The disparity may serve as circumstantial evidence of intent but is never sufficient by itself.
A court may draw an inference of purpose when the disparity is so stark that it is difficult to explain on nondiscriminatory grounds, such as the total exclusion of a racial group from jury venires. The inference remains rebuttable by evidence of legitimate neutral reasons.
Statistical studies showing racial disparities in death-penalty outcomes do not prove an equal protection violation in an individual case. The defendant must show purposeful discrimination in the particular prosecution rather than a general pattern.
No. A statute granting hiring preferences to veterans is constitutional even when it produces a severe gender disparity, provided the legislature adopted the preference to reward military service rather than to discriminate against women.
…their argument that the University is unlikely to present evidence of past discrimination by the University itself or of the disparate impact of some current admissions criteria, and that these may be important and relevant factors in determining the legality of a race-conscious admissions policy. We must therefore conclude that…