Parallel discursive arenas for members of subordinated social groups are called subaltern counterpublics.
Subaltern counterpublics are discursive arenas that develop in parallel to the official public spheres and “where members of subordinated social groups invent and circulate counter discourses to formulate oppositional interpretations of their identities, interests, and needs”.
"Counterpublic refers to those publics that form through mutual recognition of exclusions in wider publics, set themselves against exclusionary wider publics, and resolve to overcome these exclusions," writes Asen.
Learn more about subaltern counterpublics here: