That’s an assertion. Are you aware of the full breadth of what Snowden has released? It goes well beyond what can be justified in alerting us to the Obama administrations abuses (important), into specifically deeply undermining legitimate intelligence gathering, and wrecking legitimate foreign policy and exposing us to our foreign enemies.
Then maybe, just maybe, if an Agency is doing good things that are Constitutional and justifiable, perhaps they should refrain from doing things that are wrong and unconstitutional, to avoid just such an occurrence from someone with a conscience.