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Before you ask, no, this is not what happens spontaneously when you let people exercise free speech. It's the result of deliberate and coordinated campaigns, often seeded by the propaganda arm of hostile nations (e.g. RT, Sputnik, etc. make a killing on French social media)
The Kremlin has been openly supporting (and coordinating with) European far-right parties for many years. It's a very similar story as what happened in the US in 2016, with the results we know.
