Does anyone know if it would it be illegal to look at and/or download this information once it is publicly available? I guess this would vary by country a bit. Would this count as 'possession of stolen goods' type thing? Seems likely, though catching people or having the will to is another thing.
Illegal, also once you've compiled a data base of PII the laws governing personal information apply to you so you can be screwed from both ways.
Should we just trust the government to prosecute who they say committed a crime when you and I cannot verify that the government is in the right in arresting that person?
How do we know a crime was committed if it's illegal to examine the evidence?
Would you like to be accused of a crime where no one can examine the evidence and help prove you innocent? Should your whole family just trust that the government isn't lying while the judge assures people he's seen the evidence and it's true you're a criminal, but no one else can see it?
Governments love this stuff.