Kearney v. State, 489 U.S. 237 (2023)
Kearney v. State is a landmark decision by the United States Supreme Court that addresses the nuanced issues surrounding the use of prior bad acts as character evidence.
Whether the admission of prior bad acts as character evidence is permissible under Rule 404(b), and if so, under what circumstances.
Under Rule 404(b) of the Federal Rules of Evidence, evidence of other crimes, wrongs, or acts is inadmissible to prove a person's character in order to show that on a particular occasion the person acted in accordance with the character. However, such evidence may be admissible for another purpose, such as proving motive, opportunity, intent, preparation, plan, knowledge, identity, absence of mistake, or lack of accident.
The Supreme Court held that the admission of prior bad acts was inappropriate in this instance as it was primarily used to suggest the defendant's propensity for violence, which is not permissible under Rule 404(b). The evidence did not sufficiently relate to proving any of the alternative purposes outlined in the rule.
Kearney v. State is significant in setting a precedent for the careful application of Rule 404(b), reinforcing that prior bad acts must only be introduced with clarity regarding their purpose and relevance to the case at hand. For law students, this case underscores the nuanced role of evidentiary rules in protecting defendants from prejudicial tactics while ensuring that relevant, substantive evidence can be evaluated by the court.