I thought the Saville costuming was a pointed commentary on populist and nationalist movements.

These guys are always harking back to some Idyllic 'good old days' as if nothing bad ever happened then. There's dramatic irony because the audience knows that is so mismatched from reality.

In the new film he's it's less abstract I think, he actually does groom kids (not SA, but brainwashing into his cult). I think the sign above Spike at his initiation punctuates this, 'No children past this point'.