We should get all of the people who own copyright on something to register that copyright (along with the work of course) at a government web site for reference purposes. The AI would then be a simple lookup on that site.
But wait ... wouldnt that make the web site a copyright infringer?
The video demonstrates clearly how IS feels about US citizens and what they plan/hope to do to them.
The comments here and elsewhere demonstrate clearly how US citizens feel about IS and what they plan to do about them in return.
The acts on the video are an example of why most US citizens feel that way.
Do you see the imbalance? Where is the debate about why IS feels this way towards the US?
It is exactly the arrogance demonstrated by the desire to remove the video from the internet that enrages so many people around the world. It's like putting your fingers in your ears and squeezing your eyes shut because somebody hates you.
The utterly repulsive levels of dishonesty, greed and thuggery demonstrated by the US government in their actions in their own country and in countries not their own is fuelling this fire to the point that even US citizens are revolted.
Consider separating this issue into two simple questions.
1. Should this data be collected?
Even though this sounds like a horrifying step towards big brotherhood, the presence of the data in an accessible form makes a great deal of sense in law enforcement.
2. Should the government do the collecting?
If no (and I think that is the only answer to this question) then surely the logical conclusion is a) a private company should "buy" the data from Verizon et. al. and b) said company should "sell" (on production of a court order) the results of a search.
This not only solves the problem but imparts financial controls over abuse.
The fact that the data is in private hands, is not accessible in any way other than through searches accompanied by a dollar charge AND a court order should mollify most arguments.