The Marzahn Brotherhood was a neo-Nazi criminal organization in Berlin which was founded by Johann Henkenmaier. The Marzahn Brotherhood met at a clubhouse in the Marzahn district of East Berlin, and its supporters participated in xenophobic violence and football hooliganism. In 2018, the Marzahn Brotherhood participated in a 200-man brawl with the Turkish Death Daggers gang, during which their leader Henkenmaier was mortally wounded; he was succeeded as leader by Ulf Grimmer.