The prosecution has a ready and willing PR company at their disposal that they don't even have to pay for: the media. The police/prosecutor/"sources close to the prosecution" give the media information that they want published. Naturally, only their side is given to the media. The public reads this and assumes it's all true and accurate without hearing any contradictory evidence. The defense is constantly trying to catch up with this tactic but the harm is already done. This is especially true in the early stages of an investigation. For example, the picture of the "bloody bathroom", the report of the running washing machine, Amanda's "lie" about the Harry Potter book, the "bloody footprints", Amanda smelling of sex, the bleach receipt, etc all swayed the public in the early stages of the investigation toward guilt. The defense is at an absolute disadvantage from day one and, even when the defendants hire someone to help them combat this prosecution advantage, they get attacked and accused of trying to manipulate and sway public opinion. But the police/prosecution are never seen as doing the exact same thing only they don't have to hire anyone and get it all for free.
I agree the media provided very effective PR for the prosecution in several ways. The prosecution had friendly journalists such as John Follain. To the best of my knowledge the mainstream media never covered the massive level of corruption by the police/prosecution described in the links below.
http://www.amandaknoxcase.com/raffaeles-kitchen-knife/
http://www.amandaknoxcase.com/contamination-labwork-coverup/
http://www.amandaknoxcase.com/meredith-kercher-perjury-corruption/
http://www.amandaknoxcase.com/evidence-destroyed/
http://www.amandaknoxcase.com/blood-evidence-downstairs-apartment/
https://knoxsollecito.wordpress.com...old-about-amanda-knox-and-raffaele-sollecito/
http://www.injusticeinperugia.org/myths.html
Besides the falsehoods fed to the media, the media told their own falsehoods as detailed in the links below
http://www.amandaknoxcase.com/amanda-knox-media-lies/
A lot of the media coverage towards Amanda was very hostile as detailed below
http://www.injusticeinperugia.org/media.html
Despite the conduct of the media, TJMK complained the media was biased in Amanda’s favour. It shows how stupid and deluded PGP are.
If as Vixen constantly claims, there was a mountain of evidence and a strong case against Amanda and Raffaele, why did the prosecution had to resort to spreading false information to the media regarding bleach receipts, the washing machine running, the Harry Potter books and showering in a bloody bathroom. Why resort to numerous lies if the prosecution had so much evidence and a slam dunk case. There is a golden rule that the prosecution should never have to resort to lying if they have a slam dunk case.
The relationship between the media and the prosecution shows the industrial scale hypocrisy of the PGP. They complain about Amanda’s family using a PR firm but had no problem when the media provided effective PR for corrupt prosecutors. Vixen constantly bangs on about Amanda and Raffaele telling umpteen lies but PGP had no problem with the prosecutors leaking umpteen lies to the media and the media spreading lies about Amanda.