Except that many people believe they are - and will always be - "guilty" of nothing. (I have nothing to hide. . .). So that argument won't fly with huge numbers of people.
It's like the huge number of people who believe the police department/judicial system/system of choice is infallible until they personally know someone who was treated unfairly or see some egregious example of unfairness in the media. And even then, they still often believe that they never would have done XX and never would have found themselves in that situation.
If you interpret "guilty" as meaning "an action one is responsible for" then we really are all guilty of something. You are guilty of waking up this morning, you are guilty of making that post, you are guilty of expressing your opinion. The point is that a government that is tyrannical enough can in the future make anything you would normally think is totally innocent a crime and then use that against you to put you away.
And then I explain that a corrupt power can use this nearly perfect intelligence machine can use this to find something that they hold over our heads.
From there its a pretty easy explanation to get to a Hitler like figure being in charge.