"Whoever abuses the freedom of expression, in particular the freedom of the press, the freedom of teaching, the freedom of assembly, the freedom of association, the privacy of correspondence, posts and telecommunications, the rights of property, or the right of asylum in order to combat the free democratic basic order shall forfeit these basic rights. This forfeiture and its extent shall be declared by the Federal Constitutional Court."
This article asserts that no one can violate fundamental rights. If a person violates the fundamental rights of others, they lose their fundamental rights. In this way, the state can prevent a person or a group from attacking the fundamental rights of others. Furthermore, only the Federal Constitutional Court can decide whether taking away someone's fundamental rights are permissible.
So far, the state has tried four times to deny someone's fundamental rights- and the court has rejected each case.