---who will guard the guards

Sanket ‘aint no security guard’ Kambli

That one sentence in the book, Digital fortress, started it all.
Who will guard the guards!!!
This debatable point has yet to see me take sides.
I am still divided regarding this whole thing.
If you still have no idea what I am talking about, let me clarify.
One camp of ideology wants the freedom to snoop (they would call it monitor) around in everybody’s email, while the other doesn’t want this infringement on privacy to happen.
And both the sides have well justified motives making it difficult for me to take sides.
One camp believes that, in this age of terrorism threat, monitoring the contents of everyone’s email is the only way to predict the possibility of any attack. So this camp wants backdoor entry into any encryption algorithm that may make it difficult for them to read these emails. While the other camp thinks this is blatant dissolution of privacy rights of common citizens, they feel there is no saying how this power may be misused. Basically who will monitor these monitors?