Government agencies did and do nasty things to citizens, let alone 'enemies' - that's not the point.
The uproar is about a known torturer and therefore criminal being openly appointed, with much peer and legislator support, to the premiere US spook cabal - themselves a criminal entity.
But what can you expect when the Commander in Chief himself not only promoted torture but even promised to ramp up the severity.
As a related point, the latter is also a crime, nationally and internationally, and I believe runs afoul of the RICO act. All the would-be impeachers make a great fuss and accomplish nothing, when such opportunities are right in front of them.