You cannot contribute anything to the ideal condition of mind and heart known as Brotherhood, however much you preach, posture, or agree, unless you live it.
I would, therefore, say that for no reason whatsoever, except in self-defence, should one think of killing any animal.
There was no doubt that in the early and mid-eighties that many of us in broadsheet newspapers felt that we still had a responsibility to try to protect the Royal Family or if you like protect the Monarchy from the assaults of the media.