Ironically, it is their own fault. Like Trump in the US and Brexit. The left have spent years demonising and trying to silence indigenous Europeans who wish to defend their own culture, or those with concerns over immigration, Islam, etc and we have seen the shocking result of political correctness in the form of several Islamic terror attacks on European soil and so many dead, and atrocities like the Rotherham abuse scandal.
Labels like "fascist", "racist" and "Nazi" have become ridiculous cliches with no real meaning, they re on the same level as a 6 year old child telling you that you have the lurgy. More and more people simply don't care.