You can't be forgiven if you're not repentant.
The Executive branch's manipulations of the CIA are long standing, well known, and hardly a secret. Forget about Iran-Contra or the Cold War. Even in recent years. While some the thesis of
See No Evil is (and should be) debatable, it does illustrate how the I in CIA is hogtied by politics and the singular will of any given President. Add to that the expansion of Presidential war-time powers and the ability to arbitrarily call anything a war and you have the makings of government that strong-arms its questionable will at will (whether at home or abroad). All it takes is the magic word: "Terrorist".
As for the illusion of unknown successes and failures, the known failures (say nothing of the unknown) is enough to say "Enough". This is where you're complicit in the things you claim to not condone. The line was crossed long ago, repeatedly, and continues to this day. Security through obscurity is not security at all. I mean you're literally wallowing in ignorance, justifying the CIA by
virtue of your ignorance... that's absurd basis to tolerate ANY government agency.
Stage 2's argument for the CIA...
Homer: Not a bear in sight. The "Bear Patrol" is working like a charm!
Lisa: That's specious reasoning, Dad.
Homer: [uncomprehendingly] Thanks, honey.
Lisa: By your logic, I could claim that this rock keeps tigers away.
Homer: Hmm. How does it work?
Lisa: It doesn't work; it's just a stupid rock!
Homer: Uh-huh.
Lisa: But I don't see any tigers around, do you?
Homer: (pause) Lisa, I want to buy your rock.