Principled justification?
First of all, try to find some online definitions of "democracy" (without the quote marks).
In essence what it implies (democracy that is) is that the inhabitants of a democracy have rights and responsibilities. Such inhabitants usually (but not always) enable a ruling group to enact the wishes or policies or influence of policies BUT! that enabling process does not denigrate or reduce individual responsibilities or rights. One may delegate duties but one may not delegate responsibilities?
For example: school may educate my child but I am responsible for the education of my child.
Under such a premise WikiLeaks is fully justifiable.
Perhaps, for example, the ruling group is becoming so incestuous, so driven by the power, wealth and income along with the headiness os importance or other distractions in order to self seek its own importance.
Or even worse still to self seek its own importance and continued credence above all other considerations.
Interim conclusion: in a democracy Wikileaks is fully justified and all attempts to throttle it should be investigated with and by urgency by authorities enabled to protect the democratic nature of that country.
As an aside: Sweden has recently always been a bit troubled by power struggles around it. Nazi Germany & the West. USSR & the West. We cannot really blame or hurt it for the pragmatic decisions it needs to reach to further the practical and pragmatic sense of serving best the people of Sweden under a constitutional monarchy?