This story is part of an ongoing collaboration between the Institute for Public Service Reporting and WKNO-FM public radio. In 2023, troubling videos of five Memphis police officers beating motorist Tyre Nichols stirred outrage across the nation. Nichols died three days after the encounter. Emotions flared again when state and federal prosecutors failed to convict officers on the most serious charges, including second-degree murder. Recently, a new federal trial has been ordered because of alleged judicial bias. For Tyre Nichols’ mother, RowVaughn Wells, each verdict reopened wounds. “And when they read that verdict yesterday, that was them taking my son’s…