I’ve always been torn when it comes to people doing this. I myself have never done it, but I would be lying out of my ass if I said I never had the desire to do so. This is why I want a punching bag, because I’m the type of person who has the unfortunate tendency to let things build up before they all break loose at once.
That said, I think when people resort to such a violent action, it’s typically in instances where it’s impulsive and therefore uncontrolled, which can definitely be a warning sign. An ex of mine punched a wall when he got extremely angry and upset at me once, and it scared the shit out of me, because I’d never seen him do anything like it before. It never once turned into something more violent or scary, however.
I think when people display these kind of emotions/actions, the danger it may pose to other people depends on how frequently it happens. If I saw this behavior coming from someone on a regular basis, yes, I would be a little worried they may get more violent. Once in a while or barely ever, though, I think it’s human and very normal.