This is an interesting article on oversight of misdemeanor arrests.
Misdemeanor cases affect far more people than felony cases, outnumbering felony cases by more than three to one. Yet very little empirical information exists on many aspects of misdemeanor prosecutions. This Article provides the first quantitative look at appellate review in misdemeanor cases, nationwide. It uses data drawn from a random sample of direct criminal appeals decided by every state appellate court in the nation, unpublished aggregate data on misdemeanor trial court cases provided by the Court Statistics Project, and published state court statistics.
King, Nancy J. and Heise, Michael, Misdemeanor Appeals (February 15, 2019). Cornell Legal Studies Research Paper No. 19-14. Available at SSRN: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3351217