counterorganization

noun2

1. •
   An organization that counteracts or opposes another organization.

   • Once revolutionary organizations had been driven from the field, it would then be necessary to fill the resulting void with counterorganizations. — 2008
2. •
   The organization of something to counteract or oppose.

   • The sixth function of parties is the obverse of controlling and coordinating the government, namely counterorganization for opposition or subversion. — 1977