Personally I think the comment could've been worded better as it can be interpreted either as
... is always the excuse for fascism ...
(I.E. Fascists use the excuse, provably correct and can be generalised to authoritarianism in general) However I do see that it could potentially be taken the other way as
... is always the excuse for fascism ...
(I.E only those who used the excuse are fascists, completely false) I used the principle of charity and assumed the inital argument was logical, though its understandable if others aren't willing to do that
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