If the press of the US is unable to tell us about US war crimes that actually happened, that is the only thing to get.
It might be wise to consider that knowing your own government is not that strict about the rule of law when it comes to horrible crimes is also in your interest if you live inside of the US. The US is an absolute behemoth of power and utterly unable to police itself. If it was, Assange wouldn't have had to do anything at all.
I am not a supporter of whatever Russia Today is, but when the truth is that my job as a citizen of a democracy is to not vote for people whose lack of care for the Rule of Law endagers that very system.
Now ideally the media of my own state would be doing a good job on all things own government fucks up. But it turns out, sometimes journalists from elsewhere whose news organizations don't have to care so much about getting exclusive access do a better job on that front — especially if they have an incentive to find things. Even if that means I have to now try to figure out what is complete fiction and which grain of truth (of any) can be found.
So yeah, sue me if I differenciate between the Russian state, a news source financed by the Russian state and a whistleblower financed by a news source financed by the Russian state after the news outlet in Western nations with which he first had contact somehow felt they can't report on their own governments involvment in a human rights violation anymore.
I am not a fan of Assange and I don't think he is a sympatic person, but I think we all owe it to the world to differenciate and see the chain of events instead of lumping together everything ins simplistic answers.
It might be wise to consider that knowing your own government is not that strict about the rule of law when it comes to horrible crimes is also in your interest if you live inside of the US. The US is an absolute behemoth of power and utterly unable to police itself. If it was, Assange wouldn't have had to do anything at all.