I should note that my comparison was to a US organisation proscribed as an eco-terror organisation, the name of which escapes me, and which I couldn't find in a quick scan back through my reading or here[0]. I came across them through a podcast interviewing both sides about a decade out. I'll keep looking though and try and qualify my source :)
I guess what I mean is this: while I think the PA proscription is probably misjudged, it's not without its precedent.