I dislike Boris Johnson intensely, and the Daily Mail even more so, but I'll grudgingly admit that they're in the right on this issue - even though I suspect both of their motives for taking up the cause.
That doesn't alter the fact the the American government's motives for exctraditing Gary McKinnon are even more suspect, though. It's highly unpalatable to see a man whose crimes were failry small-scale being made a scapegoat / example of, especially when some murderers and rapists only end up serving 15 years.