I have very similar concerns to those of Nathalie. The only thing I would add to what Nathalie has already quite compellingly said is that establishing guilt is a very different thing from establishing dangerousness. By simply deeming someone as dangerous, that really just preempts the whole determination of guilt or innocence that accompanies our typical criminal proceedings. It's much harder to disprove dangerousness, especially if you're not being given the same procedural and due process safeguards that would accompany a prosecution.
On November 28th, 2012. See this statement in context.