Injustice Watch does great work with data. They investigate issues pertaining primarily to the criminal justice system in Illinois, and even more specifically & frequently in Chicago. This leads to several large projects with linked articles, and they're very good and tracking systemic problems within a system. At the top of the page, there is a link in the header called "Projects." There is some great work there. In every major project, they highlight several individuals to detail specific stories, while using data to verify that individual stories are samples of many stories.
https://www.injusticewatch.org/series/police-abuse-no-consequences/