The CIA has done some bad shit, even to their own citizens, but are they really on the level of the KGB? Seems like the KGB was a more overt daily-life terror, whereas the CIA has a more 'occasional' history of atrocities.
Always seemed to me the CIA were more creative: fish robot, sewing transmitters inside cats, arranging for their former director to die days before he was to give testimony. KGB and GRU were just "we're going to push you out the window" or "murder your family."