The corollary to this ridiculous argument: "if you've done nothing wrong, you have nothing to hide" .. is this:

  If you've done something *right*, you will be the target of those you offend.

When "right" can be defined variously as any one of: a) done something to reduce the effect of the criminal military-industrial complex on society, b) exposed corruption in the ruling elite, c) fought stringently for the rights of minorities who have been oppressed, d) fought valiantly to expose ecological and economic criminality on the part of the industrial elite, &etc.

Just because they say its for fighting criminals doesn't mean that it won't be used to fight revolutionaries and upstarts who mean to bring justice to a destitute world. Every single technology under the sun can be used for good, or evil purposes - the only thing that makes the difference is the intention behind those who wield the technology.

And as of right now, there is no way to monitor/control/adjust the intentions of the super-surveillance state: they, real people behind the masks, simply have too many secret powers.