No.

if it was “inexcusable” to me this would mean it was not self defence or defending a loved one, both of which I’d say were acceptable uses of force. Unless it was something as trivial as a schoolyard fight where no blood was drawn or cops never got involved.

But If someone killed the piece of scum what raped his missus or sister or mum I’d say it was perfectly excusable even if they tortured the attacker a bit and done a few years inside because of that. In that case I would “put it in the past”…