This edition of the FBI [Federal Bureau of Investigation] Law Enforcement Bulletin contains a featured article about "Combating Gangsters Online: Law enforcement personnel need to understand how to investigate gang activity in an online environment." Other articles include: "Law Enforcement Professionalism"; "Searches of Motor Vehicles Incident to Arrest in a Post-Gant World"; "Are You an Effective Leader?"; "Exposure to Child Pornography/ Exploitation Materials". and "Harnessing Technology".
FBI Law Enforcement Bulletin: http://www.fbi.gov/publications/leb/leb.htm
FBI Law Enforcement Bulletin (April 2011), v.80 no.4