"I'we seen bad thigs, this is all i got, lets look at it together."
1) The US was doing a lot of things wrong. Going off the 2011 cables [0] they were spying on various people they weren't meant to be, there were one or two things that look war crimes to me but who knows technically and a few gems like "Der Spiegel reported that one of the cables showed that the US had placed pressure on Germany not to pursue the 13 suspected CIA agents involved in the 2003 abduction of Khalid El-Masri, a German citizen".
2) It wasn't obvious in that leak that the US was doing anything counter the interests of the US. But Assange isn't a US citizen and wasn't in the US at the time, so that isn't a reasonable standard to hold him to.
3) Even internally to the US though there is a reasonable argument that he was helpful. If US citizens don't have easy access to this sort of information, how are they supposed to effectively exercise democratic control on the government? People are going out and doing terrible things in their name which, arguably, are counterproductive and they would probably not want done. Accountability requires sunlight and they can't debate whether there is enough sunlight without people like Assange.
4) It turns out that the US does have a huge probably-illegal certainly-ill-advised spying program that was being sniffed out by leakers. The response to Assange seems likely to be part of a campaign to keep material information on such topics like that out of the public sphere.
[0] https://en.wikipedia.org/wiki/United_States_diplomatic_cable...
There is no genuine concern here over some deep vulnerability our society has to russians or anyone because of wikileaks. Assange (nor snowden) caused any material harm remotely proportional to the blowback they've received since. This is about punishment for circumventing state-level controls and embarrassing the state. To think that Trump would somehow be more lenient on either is unthinkable—he's part of the same class of people that Clinton is that is most sensitive to the health of systems Assange threatens.
Enter Russian oligarchs, just like they bought up London, and then control the oligarchs by force when you can't simply direct them by shared ideology, and you've got pretty much the most powerful propaganda outlet you could possibly have, until you exploit it so heavily that you burn its former reputation to the ground. Which you do, because you yourself care nothing for its well-being: it's a tool for your political aims in fighting NATO and furthering your empire.
Sure, it applies to western media as a whole, from the bottom to the top.
If WWIII had stayed entirely in the infosphere, and Russia had not invaded Ukraine and tried to make good on their preparations, nobody would ever have known WWIII had been waged in the infosphere. That's how well it had been going. It ran aground when physical countries had to be annexed.
That Wikileaks systematically favors the russian government, and never does anything contrary to the interests of the russian government, strongly suggests they are an asset of russia.
You could claim Wikileaks is a Thai or South African asset too on those preconditions.