At least Hoxha was consistently opposed by the West. The demonic image came later. So I will try to look through the inconsistent propaganda, to see exactly what Pol Pot is supposed to symbolise. He is the negative example, for the anti-utopianism of European liberalism. For liberal suspicion of planning, of state power, of ideals, of utopias, of grand projects - for all this, Pol Pot is the Dreadful Warning.
Liberalism needs a pile of skulls.
See, Pol Pot. So now the unpleasant questions. Pol Pot, Stalin, the Gulag, the Stasi, and the Berlin Wall, have become negative legitimisers of liberal-democratic societies. I think it is stupid to ignore this political fact. A large part of the European population believes, that limiting liberal free-market society, is morally equivalent to the actions of Pol Pot.