counterinstitution

noun

coun·​ter·​in·​sti·​tu·​tion ˌkau̇n-tər-ˌin(t)-stə-ˈtü-shən 

-ˈtyü-

variants or counter-institution

plural counterinstitutions or counter-institutions

: an institution formed to oppose or counteract another institution

… they have started creating small, democratically ordered counterinstitutions to help them alter or dismantle the "official" behemoths …

—Harvey Cox

Word History

First Known Use

1844, in the meaning defined above