This video shows a murder suspect attempting to take control of a police officer’s gun. It appears that the weapon was secured in a retention holster — a damn fine idea for armed Americans who open carry. The more important point: the gun grab was met with immediate and overwhelming force. If someone goes for your gun, counter-attack with as much violence as possible.
It’s a life-or-death situation. If someone removes your gun from your holster they’re probably going to use it. On you. If you’re in a wrestling match with a bad guy for your gun — with enough control over the firearm to keep it pointed at your assailant — do not hesitate to shoot the bad guy off your gun. That is all.