not ALL civil servants, but Rosenstein is in a leadership position (DAG).
He came up wit the Special Counsel,because Sessions ( like an idiot) tried to prove he was above politics by Recusal to Russians -which we know is crap. The set up caused the SC, not "Russian collusion."
Ideally Trump would fire them both, but then the Dems would drag out a replacement and leave DoJ headless.
Once the Mueller crap is over, though they need to go.
Rosenstein is a hack,and Sessions come up with bad ideas like going after weed, and arresting mayors,,
he's got his own agenda.