§ 240.15  Criminal anarchy.
  A  person  is  guilty  of  criminal  anarchy  when  (a)  he advocates the
overthrow of the existing form of government of this state by violence,  or
(b)  with knowledge of its contents, he publishes, sells or distributes any
document which advocates such violent overthrow, or (c) with  knowledge  of
its  purpose,  he becomes a member of any organization which advocates such
violent overthrow.
  Criminal anarchy is a class E felony.