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It is unhelpful and counter-productive to label anyone and everyone that is against migration and refugee policies who wants to voice their opposition as a Nazi—setting aside for only the briefest of moments what crimes the Nazis carried out, but anyone who marches alongside or in a group infiltrated by Nazis is de facto a Nazi themselves—or a useful idiot thereof, which is arguably an even worse fate, to be a tool without agency of hatred and nihilism.
This applies universally across space and time but Germany has made some very simple guidelines should one find their demonstration impinged upon by Nazis which should prompt one’s hasty retreat and alert the authorities: the Hitler greeting, Swastikas and other symbols of Nazi Germany and denying the Holocaust and extent of their crimes against humanity are illegal and finding oneself in the midst, even marginally and uninvited should signal one to get out and regroup right away. There’s no acceptable common-ground and one’s polite and practical arguments for xenophobia and racism are quickly accelerated to their natural conclusion, institutionalised ostracism and alienation and perhaps even industrialised murder. Are organisers and political figures responsible for the behaviour and outlook of all of their constituents and benighted disciples? In the legal sense, no—lest one prove a calculated neglect, but in the moral sense, leaders should always police for extremism and make the effort to reform their stance and clarify their own position to ensure that there’s truly no place for such views. Anything short of that is dereliction of duty and makes one’s crusade and campaign just another rung in the ladder for the forces of regression and division, no matter how one pleads or equivocates.