体たい制せい側がわ

noun, noun which may take the genitive case particle 'no'

the establishment; the powers that be

Refers to the existing power structure, mainstream authorities, or institutional side, often in contrast with reformers, outsiders, or the general public.

• 彼かれは体たい制せい側がわの人にん間げんとして批ひ判はんを浴あびた。