Agree with Cod. None of us have any idea where Madeleine is.
However, it is news that Lindy Chamberlain, the mother in the Dingo baby case, has spoken out in favour of the McCanns. Doesn't mean they are innocent, but does mean someone who has been falsely accused and imprisoned can see the paralllels.
But re the investigation, I think critism of the Portugese police is not national prejudice (and I do wish people would stop bandying the term racism around so loosely - being Portugese does not mean you are a different race from anyone else. It devalues the word).
It's based on reporting of their incompetence. Which is more accurate than the ludicrous speculation about the McCanns since journalists have seen with their own eyes what the cops have done. And then checked it with forensic experts. So it's not just speculation or jounalists' opinion.
The police failed to secure the (apparent) crime scene. That is an established fact. (Apparent because no-one knows whether Madeleine was taken or whether she somehow wandered off). They failed to wear protective clothing while tramping around the crime scence. Again, that's something journalists saw with their own eyes. They failed to secure the car. So any forensic evidence may well be contaminated. Stuff in the boot could well have come from the McCanns' possessions - they've had their luggage, including Madeleine's clothes in that car for weeks!
The Guardian says today (and this is not fact but an interesting piece of reporting) that questions from the police about sedation were sparked by disbelief that the children were asleep by 7.30. Because this would be very, very unusual in Portugal. So it suggests cultural misunderstandings may be part of the problem.
Of course I'm not privy to the details of the Portugese investigation. But it does seem likely based on reporting by serious, non-hysterical newspapers, that there are real problems with the forensic evidence.
Another interesting POV is that the tabloids don't know which way to call this. Tabloid journalists and editors usually have a nose for guilt. Of course that doesn't mean they are infallible but it is unusual.