Who can forget the infamous threat from Greenpeace's Gene Hasmi?

We know who you are. We know where you live. We know where you work. And we be many, but you be few.

But was this a one-off? The evidence is suggesting otherwise. In the comments thread to a particularly sick Guardian post, which was adorned with a photo of a severed head, and which I will not therefore dignify with a link, comes this from commenter Bluecloud:

Should that not be [Matt] Ridley's severed head in the photo?

and this from the same source: