"he managed to rip off the mask and expose the unbridled imperialist evil lurking"
That's a bit absurd given showed the total opposite:
Gigabytes of diplomatic cables of highly sensitive data revealed a US Diplomatic Corps trying to do a decent job in a world rife with ugly corruption.
The 'Arab Street' saw the information and they saw the US trying to assuage and nudge brutally corrupt leaders.
The cables didn't unite Arabs against the US - they exposed the ruthless corruption of their own governments and 'united' them against their own governments.
I was in Tunisia near the time of the revolts and I can tell you the thing that pissed them off the most was probably the fact that their disgraced PM had Canadian citizenship (i.e. citizen of convenience, as many do) and simply flew to Montreal to enjoy Canadian Constitutional protections and avoid prosecution.
It's shocking that someone could read about Arab governments doing 'very bad things', the US government trying to stop them, and then come away with the notion that the US is the bad actor.
It speaks to some kind of deeply held ideology or perspective that can make facts that point one way, seem like they point in the other direction.
Assange will have to face trial given the fact that he may have explicitly helped Manning break into systems of National Security, which is definitely illegal. I don't think he did, but there's been some evidence made public that indicates that it's possible. Soon we'll have a court case and see the evidence.