Referencing the US war crimes that Assange helped expose is important though. I'm not denying Assange committed crimes by leaking or helping to leak secret documents, but it was the moral thing to do to expose war crimes that would otherwise be (and which are being) covered up.

In this case, the UK should not only consider the extradition request itself, but how they stand with regards to the US and their war crimes. And when it comes to war crimes, for the UK to be silent is to be complicit.