I had a deadbeat housemate once who claimed to have been visited by two special branch cops who offered to arrange him a sexual partner in return for spying on the local anti-war group he was in. This seemed ludicrous at the time, as the group would gather outside the town hall in small numbers and sing “No More Blood For Oil” all in different keys, but in the light of this story (which had been known for quite a while now) it absolutely tracks with the tactics it turned out they’d been using.