Then there’s the allegation that Snowden caused harm to national security or to innocent people, a claim that has been made against every whistleblower for decades who exposes corruption and criminality by the security state. Just as is true of the claim that Snowden sold or provided secrets to the governments of Russia and China, one should not even consider accepting the truth of this claim absent evidence to corroborate it.

Where is this evidence? Who was harmed by this NSA reporting? Not a single example or piece of evidence has ever been furnished in response to those questions, with the defenders of NSA opting to just repeat the accusation over and over in the hope that people will assume that it is true by virtue of is repetition.

Source.