Despite what we like to think, with every declassified document released we learn that what we thought were facts in the past were really just fictional stories being pushed upon us by the media.
Our ability to see this deception admittedly means that finding the truth will be a bit more messy than the "truths" we've been presented with in the past. But far from this diminishing our ability to discern truth, it is helping us by forcing us to return to critical thinking.
If this means democracy is in crisis, then democracy requires deception to operate.