The move has long been taken lightly, but with the alleged foiled coup in Germany in early December, the "Reichsbürger" showed their determination and dangerousness.
On December 7, the German police effectively dismantled a far-right terrorist group close to this movement, accused of fomenting attacks, in particular against Parliament.
Twenty people were arrested, "Reichsbürger" or "citizens of the Reich" in French.
This conspiratorial and nostalgic nebula of the great pre-war Germany, made up of countless small groups, would have around 23,000 members in the country, according to the intelligence services.
Our correspondents have investigated these "Citizens of the Reich" who are worrying the authorities.