Jim Mustian, law enforcement reporter, New York, reported exclusively on the launch of a federal investigation into the death last year of Ronald Greene, a Black man in Louisiana, following what state troopers say was a struggle at the end of a traffic chase. It is a long-simmering case in which police have refused to release any body cam video or records. Mustian’s deep reporting also included confirmation of a separate FBI civil rights investigation and the publication of graphic death photos. The probe has raised questions that the Louisiana State Police has so far refused to answer.