All Australian newspapers hit the front page

“Daily Telegraph”, “The Australian”, “Financial Review” and others appeared in letters covered in black and with a red seal that contains “secret”.

The protest is against national security laws, which journalists say have blocked reporting and created a “culture of secrecy” in Australia.

The government says it supports press freedom, but that “nobody is above law”.

In June, police raids at the Australian Broadcasting Corporation and at the home of a “News Corps Australia” have triggered major reactions.

Media organisations have said the raids were conducted because of articles based on information from informants.

One article has detailed war crimes claims, while another has reported an alleged government agency's attempt to spy on Australian citizens.

The campaign Monday was supported by several televisions, radios and news sites.

Michael Miller, chief executive of “News Australia”, posted on Twitter an image of black forehead, asking, among other things: “What are they trying to hide from me”?

Since the new spying legislation was passed last year, the media have been lobbiing for journalists and informants to become exceptions so that they can report sensitive information.

Australia's prime minister, Scott Morrison, said press freedom is important for Australia's democracy, but added that “the adoption of law” should be supported.

This includes me, or any reporter, or others”, he said Sunday.