Earlier quoted context omitted.
I thought it's obvious from the context, but examples include denying the holocaust being a crime.
I don't see why a future collapse into tyranny of a country in Europe would have to involve a revival of the symbols of any particular defeated regime. If they needed symbols for propaganda purposes, they'd draw from legal symbol pools, like Roman culture. (It "worked" once...) More likely, they would draw from contemporary symbols that already had positive sentiment associated with them. The point being, it's not cl…
Obviously banning a symbol is not going to prevent future violent movements by itself, but it also seems wise to not leave still-hot embers of symbolic power lying around for the next would-be demagogue to fan back into a fire. People trying to pick up those old symbols are giving a very strong signal about their ideology.
I agree that the main bulwark of a society against falling into fascism is its people's memory of the past and willingness to prevent recurrence of such episodes though.