88, the Roman Salute, a couple of names, and double lightning aren’t acceptable and it can stay that way without any harm. Why do you even want those things? It serves no good.
Shaven heads, runes, 14, and the word Degenerate are all fine without additional context, but the first 3 can certainly be red flags in the presence of additional factors.
They should have symbols to call their own, so we can easily identify and target them.