My son just asked why the English are so bad "spying on Europeans". I reassured him by saying that most western governments are almost cetainly corrupt (inc dear old Australia). And he who controls the databases controls the politicians, police, lawyers, judges ... You get the idea. And even better, just because you've got nothing to hide, it's easy for these databases to be changed by someone in the know. These systems are extremely dangerous, and should not be underestimated.