Weapon Retention

Up until about 30 years ago, weapon retention was not a big subject in civilian police training.
Then, weapon retention was mostly about brute force, not thinking smart.
This meme probably quadruples with regard to non-police civilians, especially with regard to Open Carry.  With many more States now authorizing ordinary citizens to carry concealed and even openly, certainly this is to become an issue.
If you don’t have a military or police background, have you even thought if you were open-carrying how you’d react and respond to someone trying to relieve you of your sidearm?
I only had one experience with this:  I was working private security at that urgent care facility – graveyard shift.
Some patient was brought in by ambulance transport, with his friend.  The friend was drunk. .  Busy night, tight quarters, multiple persons.  Other patients already upstairs.
We all took the elevator upstairs to the triage area, patient on a gurney.  Upon exiting the elevator, I was directing the EMTs where to turn when I felt a pronounced tug on my Sam Browne belt, at the holster!
I was using a black leather Safariland Velcro pant belt/duty belt arrangement, with a Safariland thumb-snap revolver holster.  High ride design.  The top edge of the .357 stocks were at my elbow.  Reflexively, I bent my arm, trapping the hand in place, and spun on one foot away from the hand’s owner.
The guy yelled (guess I almost broke his wrist) and released the gun.
I didn’t see weapons in his or anyone else’s hands, and it was tight quarters with lots of people, so, I didn’t break leather.
I really wanted to shoot the bastard!  By now, he was looking at me, holding his wrist and whimpering.
And he said, “I just wanted to see it!”
By now the nurse and medical assistant were dealing with the patient.  I asked the staff if he should remain, or should I escort him elsewhere.  They gave him a once-over and said if he sat down and was quiet, it was okay for him to stay.
I waited another few minutes, then went back to my station.
I’d had no weapon-retention training.  Some karate basics with some trapping/sticky hands work.  That, and the high-ride holster saved the day.

Do some reading.  Get some training.  Even some familiarity with a few moves is better than looking down the barrel of your own gun.
I’ve a blue gun, just for that reason.  Do you?