In California, there is a legal principle known as the "shopkeeper's privilege." It is a limited right to detain a person suspected of shoplifting. I stress that this privilege is limited, meaning that the detention must be carried out in a reasonable manner. Generally speaking, what constitutes reasonable manner will depend on the facts of each case, but resorting to physical violence is not likely to be viewed as reasonable when the son (whether or not he was an employee) could have gone inside and called 911. You likely have a civil and criminal case of assault and battery.
Crucial to the outcome of this situation, however, is whether you have the video? If you don't, then it becomes a credibility contest between you and the son/shopkeeper. Did you file a police report? Anything that documents contemporaneously what happened? If you don't have the video, and I suspect you don't, the likelihood of it still being around is slim, as many businesses like the one you described recycle their video. It depends on what type of system they are using and how sophisticated a place it is.
Answered on May 13th, 2019 at 9:48 AM