American Police Beat:  http://www.apbweb.com/

FBI Law Enforcement Bulletin:  http://www.fbi.gov/stats-services/publications/law-enforcement-bulletin

FindLaw - U.S. Supreme Court Opinions: http://www.findlaw.com/casecode/supreme.html

Officer.com:  http://www.officer.com/

Police Chief Magazine:  http://www.policechiefmagazine.org/

Police Magazine: http://www.policemag.com/

PoliceOne:  http://www.policeone.com/