Forensic Criminologist and police expert “Dr.Ron” Martinelli will be a featured guest expert tonite on CNTV International-National television at 6:25 pm PT; 7:25 pm CT and 8:25 pm ET. Dr. Martinelli will be discussing gun violence, violent crime and its causes and gun control in the U.S. and internationally. Tune in to learn more about these interesting and very relevant topics. Check your cable provider and the Internet for stations.