The Canadian Government tried this angle and it blew up in their faces big time. Really really big time.

Protecting Children from Internet Predators Act

http://en.wikipedia.org/wiki/Protecting_Children_from_Internet_Predators_Act

The civil disobedience/protest was so large the mail servers of parliament were knocked off line.

Stake Holders are the major problem.

For example (ignoring the whole question of gun control for a moment) a way back the Canadian government started a a Long Gun registry and budgeted a couple of million dollars for it. I knew chaps who were in on it from the start. It was essentially a second year computer science database project.

However, once underway and all the stake holders got involved and the turf wars started and the pro pr campaigns started to counter the anti government registry campaigns it eventually ballooned to a couple of billion dollars.

Then because of the major cluster frak it turned into it did not really work so after a few years of operation and bad publicity it was canceled.

Can't wait for this scene

And He blotted out every living substance which was upon the face of the ground, both man, and cattle, and creeping thing, and fowl of the heaven; for after the 40 days and nights God let up the rains and gazed down upon the Ark looking resplendent in a sea of dead and bloated babies and children. Their faces contorted in the agony of drowning while the carrion birds of the ocean did feed on their bloated and discoloured corpses. And they were blotted out from the earth; and Noah only was left, and they that were with him in the ark. And the Lord God smiled and was joyful for he knew then that his retribution had been slow and painful and without mercy for even the young and innocent. (Genesis 7:23)