Op-ed by Michael Avery
Professor Emeritus at Suffolk Law School and past president of NPAP:

"The thousands of cases I have studied over four decades establish beyond any doubt that a widespread unwillingness of federal judges to hold bad cops accountable is a principal cause of police brutality."

http://www.baltimoresun.com/news/opinion/oped/bs-ed-judging-police-20160723-story.html