It's interesting, the guy on the youtube asserts that he has investigated the Italian's evidence against Knox, and says it's ridiculous. If anyone contradicts him, he says that he is a professional investigator, and has investigated violent crimes for blah years. Yet, when you read the anti-Knox wiki, you find that their truth is so radically different, that it's impossible to reconcile what he says with any possible reality.
Moore: Knox was interrogated by the Italian police for 53 hours, while being slapped around. At the end of this grueling set of interrogations, deprived of food and sleep, and an interpreter, she gave a vague statement about how her black boss at the bar might have killed Kercher. Under this pressure, it was understandable that she cracked.
Anti-Knox reply: The first interrogation of Knox lasted 2.75 hours, from 11pm to 1:45AM. It was done by one female officer, with one female interpreter present. By 1:45AM she'd signed a statement that Lumumba had killed Kercher. You can see the statement. That statement would have taken about 1.5 hours to draw up and clarify. My deduction: this means that she would have come up with this statement about Lumumba some time within the first half hour of the first interview.
Moore: The Italians said they had a receipt for bleach, that they never produced in court. You can see from all the crime scenes that nothing was ever cleaned, anyway.
Anti-Knox: the police said they smelled bleach when entering her boyfriend's place, and found 1 closed bleach under the sink, and another open. His cleaner told them that he told her never to use bleach, and to always use Lysoform.
Moore: testing of the knife they said had Kercher's DNA on it, was done by amateurs who weren't up to the task. After a lot of hassle, they finally got the knife off the Italian police and did independent testing, and found only rye starch on it.
Anti-Knox: forensic investigators found one speck of blood in a crack of the knife. When they knew the test could only be done once, they called all interested parties to witness the testing of this speck of blood, so nobody would cry foul, later.
Anti-Knox: when Sollecito was interviewed, he immediately had an explanation for Kercher's blood on the knife. He said she had been over for dinner, and had been pricked by it accidentally. He later admitted this was all a lie.
Moore: Guerde's modus operandi as a known burglar, was to throw a rock through the window, and wait until anyone responded. If nobody did, he would go in and rob the place. The police protected him because he was obviously an informant.
Anti-Knox: the rock was 5kg (which would have been near impossible to throw) The first Communication Police on the scene, deduced within minutes that the burglary was staged, because the glass was ontop of all the strewn-around mess, and there were two laptops and other stuff lying around the place. He advised Sollecito of this. Guerde had no criminal record.
Moore: Knox and Sollecito called the police, and for some reason these incompetent Communications Police turned up, and wrecked the crime scene.
Anti-Knox: The Communications Police had turned up because someone had turfed both of Kercher's mobile phones into someone's back yard. The owner of the yard, was concerned that the first phone they found might be part of a bomb from a bomb threat they just had. The police tracked down Kercher's dwelling and found Knox and Sollecito at the house. Anxious to return the phone directly to Kercher, the police walked into the house and inquired about why Kercher's door was locked. Knox said that Kercher locked her door all the time, and it was nothing to be concerned about. As the police headed away from the house, another resident of the cottage returned home, and talked to the police. When she heard that Kercher's door was locked, she freaked out, and convinced the police to go back, and break the door down. Knox's statement later said they had been attempting to break the door down, just prior to the police turning up. The police later had a minor argument about whether one of them had gone through the door, momentarily, after busting it down.
I find it difficult to reconcile the two positions, even accounting for significant bias. It's somewhat like religion.