A great source of resources and context is a guide created by librarians at the Universtiy of Arizona Libraries
Grand Jury Documents
Documents Released in the Eric Garner Case "A judge has approved the release of some details about the grand jury proceedings in the Eric Garner death case. Those details are on the last page of this document." From the Los Angeles Times
"Here are documents and evidence presented to the grand jury in Clayton, Mo., that was deciding whether to indict Officer Darren Wilson in the August shooting of Michael Brown. The documents were released by the St. Louis County prosecutor, Robert P. McCulloch. Note: Some of the documents contain graphic language." From the New York Times.