I don’t know anything about the Netherlands situation, but Nazism is just one particular flavor of fascism, and all forms of fascism have been on the rise in recent years. Especially white supremacist forms.
Hitler didn’t start out with killing people either. He started out the exact same way as Trump (in fact, one of Trump’s former wives has said that he used to read Hitler’s speeches before bed, so it would be no surprise to learn that he’s straight up copying Hitler); blaming Germany’s problems on immigrants and Jews, going after the LGBTQ population in Germany, even promising to build a wall around the German border to keep out illegal immigrants if he got elected. Trump’s campaign slogan, “Make America Great Again,” came from a pro-Nazi WW2 political party called America First. There is now an “America First Foundation” that proudly declares themselves as a movement that’s an “amalgamation of traditional values, Trumpian populism, and American Nationalism” (their own words right off their website). Not only are they literally using the exact same name, but “traditional values” is one of those major red flags that means “white supremacy,” as is nationalism. They don’t call themselves Nazis, but they sure as hell share all the same values.