The AfD in Lower Saxony is assessed as an extremist effort by the state Office for the Protection of the Constitution. “The assessment of the Office for the Protection of the Constitution is clear: the greatest danger to our society comes from right-wing extremism and, according to the classification, the AfD Lower Saxony can clearly be assigned to this area of phenomena,” mentioned Interior Minister Daniela Behrens (SPD).
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https://www.welt.de/politik/deutschland/article69944e5b04a4c3f3f945866f/verfassungsschutz-stuft-afd-niedersachsen-als-extremistische-bestrebung-ein.html