Karl Burghard Bangert is a “Nazi druid,” Holocaust denier and member of the German version of the sovereign citizen movement (Reichsbürgers). He is going to trial in April along with three other defendants for allegedly hoarding an arsenal of weapons to prepare for the collapse of society.
Interestingly, he is also charged with sedition because of his denial of the Holocaust, calling for the murder of Jewish individuals, and inciting hatred against refugees.
You can learn more about the case here.