public servant (derogatory, esp. police); dogs of the state
Derogatory term likening public servants, especially police, to obedient dogs of the government. The literal gloss 'dogs of the state' is a direct translation of the Japanese phrase.
That police officer is called a dog of the state behind his back.
彼らは国家の犬のように政府の命令に従っている。
They follow government orders like dogs of the state.
Compound of 国家 (state, nation) + の (possessive particle) + 犬 (dog). The phrase is a calque or parallel to the English 'dogs of the state', used as a derogatory metaphor for public servants.