Well, the problem with the Sinn Fein being zombies is that it tells us that the IRA really were monsters. And in the US, it is usually assumed that the UVF (and UDA) doesn't even exist. That would be a slander on the Christians. The bureaucratic tyranny of the government in foisting the RCs into English land is in this episode played for laughs, but I don't really think that's a useful way of looking at the peace. A parades commission isn't really interference causing upheaval.
Is the C of E really that popular anywhere? And is the man whose wife was killed the equivalent of a deacon, i.e., a lay leader of the congregation? I had thought a vicar was a priest assigned to a particular parish.