There has always been a tug-of-war between the press and the government about what is and what is not permitted and it is universally recognized that a free press is essential to the functioning of democracies.
The issue at stake here is a complicated one, whether or not wikileaks is part of the press, and even if it isn't whether it should be counted as such.
Governments the world over, from the worst to the best have figured out a loophole in the whole 'free press' business, which is to use 'access' as a coin with which to control the press. In a world where eyeballs govern the budgets of newspapers not having access directly affects a newspapers bottom line. WikiLeaks circumvents the access trick by simply not being susceptible to that kind of leverage and it is exactly because of that that I suspect that they are seen as 'dangerous' by those in power.