The Reichsbürger group is also trying to build an army and preparing for a "day of reckoning," according to news magazine Focus.
Usually dismissed as a disparate association of ideological radicals, the Reichsbürger have increasingly been in the headlines after a series of violent incidents in the past two years, including the murder of a policeman in the Bavarian town of Georgensgmünd.
Watch video 01:57 Share "Reichsbürger" Wolfgang P. sentenced to life Send Facebook Google+ Whatsapp Tumblr linkedin stumble Digg reddit Newsvine Permalink http://p.dw.com/p/2mMhA "Reichsbürger" Wolfgang P. sentenced to life
After putting in information requests to Germany's domestic security agencies, Focus reported that the number of Reichsbürger adherents had grown to 15,600 by January – up more than 50 percent from the same time last year.
The biggest number of supporters resides in Bavaria, which has about 3,500 Reichsbürger members.