So explain the banning of double organisation in democratic centralist organisations :)

From the CONSTITUTION

Members can be expelled if they are found to be in substantial disagreement with the principles or policies of the organization or if they consistently engage in undemocratic, disruptive behavior or if they are under the discipline of any self-defined democratic-centralist organization.

Charters for Locals may be revoked by the NPC or the Convention if the majority of members of a Local are found to be in substantial disagreement with the principles, practices and policies of the organization, or if a majority of members of the Local is under the discipline of any self-defined democratic-centralist organization or if the membership in the Local falls below 15 (except in special cases), or if the Local does not function for an extended period of time.

he Charter of the Youth Section may be revoked by the NPC if the majority of members of the Section are found to be in substantial disagreement with the principles, practices or policies of the National Organization or if a majority of members are under the discipline of any self-defined democratic-centralist organization or if the membership falls below 50.