Problem is, I’m picturing somebody like Janet Reno or Mike Nifong simply seizing somebody’s computer and loading evil pictures onto it and resetting the dates on them and trying to figure out how anybody would defend themselves from that in a courtroom, and I’m not coming up with anything.
It's harder to fake than you might think; I was recently involved in court case involving allegations of falsified data, and there was evidence that was available. That said, an out of control government will always have more power than an individual when the full force of the state is brought against them. Two seperate issues: 1) Should Child Porn be prosecuted? 2) Should government falsify evidence to convict people.
The falsifying of evidence can be done to show any crime, so what law is shown to be violated doesn't really matter. See the entire history of Stalin . . .