I gestured energetically to someone to throw the next fruit to me to fruit ninja it and cut my hand on the knife

If by undesirable you mean I desire instead to keep living, and by conserve my way of living you mean I just get to continue breathing - then yes. They try to kill me, there’s no moral limit on what I can rightfully do in return if they don’t succeed. Including rocket them off to planet conservative before they get another shot.