I don't have an idealist view of the justice system in the U.S. (where I live) or anywhere else. What I do know is, don't hire an expensive PR firm (even if they are pro bono) to help trash the judicial system that I want to rule in my favor.
Is that really how you would feel if you'd been railroaded?
Imagine just for a minute (you can go back afterwards, relax) that you're a member of Amanda's family and you know she's innocent and that you know that the prosecutor is a convicted nutter who should not still be running around loose, that the police were incompetent, that the judge was not impartial and that the Perugia system had closed ranks to defend this disaster?
(Even the most determined authoritarian surely has to admit at this stage of the game that the various leaks and lies, the destruction of evidence, the insufficiently rigorous crime scene and evidence handling, the pretended failure to record only the most vital interviews and the whitewashing of all of the above in the Massei report is cause for deep concern
even if you think that Knox and Sollecito are guilty. Don't let's get started on the trophy photo on the wall or the medals handed out to the officers responsible for the mess).
At that point I'd be thinking "If we play the game again their way we'll get the same outcome. We need the eyes of the world on these people if we want a fair trial. They need to fear the consequences if they go too far to cover this up".
If I were them I'd definitely get every bit of publicity about the case I could. The more sunshine focused on the Perugia system right now the better.
That said, the oft-stated and more-oft-implied claim is not merely that Knox has a PR firm to get attention, but that Knox has a PR firm to spread lies about the case and that every article published about the case from a pro-innocence perspective is disinfo planted by the nigh-omnipotent FOA conspiracy. Every time some pro-innocence columnist or speaker gets a fact wrong, it's leapt upon as evidence that they are a mendacious PR plant. Yet in this ridiculously complicated case every time a pro-guilt columnist gets a fact wrong, never mind hobbyist agitators like Harry Rag who lie like rugs, it's just a mistake. Their evidence for an evil PR conspiracy is not evidence, and if it was the guilter side would logically need to have an equally powerful PR machine hidden in the shadows somewhere.
Anyway, you can now go back to thinking they were guilty... somehow, in a chain of events you cannot imagine, for reasons that you cannot defend as logical. As you were.