As the secrecy and false increases, the point is reached where the government no longer serves the citizens and instead enslaves them. At that point, the people’s own government becomes their greatest enemy.
At this point there is no information that I have seen to point towards the political use of the NSA's domestic spying. It is certainly reasonable to think it could go that way. We have seen the politicization of the Justice Department, IRS, EPA, and many others. Certainly the FBI has been used repeatedly to spy for political purposes ever since it was founded. Still, at this point it appears that the NSA broadly collects, but has not yet weaponized domestic intelligence to be used against the county's citizens. At some point, it may well become irresistible for those in power to use the information against their political enemies.