Sean Grayson, the former Illinois sheriff's deputy convicted in the fatal shooting of Sonya Massey, died Sunday while serving a 20-year sentence, according to NPR. Grayson's conviction came after a case that drew national attention to questions of police accountability and the use of force, with Massey's death becoming a rallying point for advocates demanding change in how law enforcement responds to calls for help. His death in custody closes one chapter of a case that many say exposed deeper, systemic problems within policing rather than resolving them. For Massey's family and community, the conviction had represented a rare instance of accountability in a fatal police shooting, and her name continued to be invoked by those pushing for reform long after the courtroom verdict. Grayson's death does not erase the broader conversation his case sparked about training, oversight, and the consequences officers face when lives are lost at their hands. Advocates say that work, unlike the sentence he was serving, remains unfinished.