By Tom Beattie & Tom Beattie NBA superstar LeBron James has called for the reform of gun laws in the US following a tragic shooting at the University of Nevada-Las Vegas campus. Three people lost their lives in the attack on Dec. 6, with the suspect now dead, according to university official Adam Garcia. Another person was injured in the terrifying incident just a few miles from the Strip and is currently in hospital, while four others were taken to hospital due to panic attacks. This mass shooting happened six years after the Las Vegas country music festival massacre, where 60 fans died and h…