Al Jazeera English will air an hour-long special, "Journalism is Not a Crime," on Dec. 29, part of the news organization's press freedom campaign urging the release of three of its journalists incarcerated in Egypt for the past year.

al jazeeraAl Jazeera anchor John Seigenthaler will host the program -- 9 p.m. ET on Al Jazeera America -- to mark the one-year anniversary of the reporters, the network said.

Peter Greste, a Latvian-Australian reporter who is one of the three imprisoned, penned a letter published in Australian media Dec. 22 in which he cheered the coalition of political, diplomatic and media figures that have "reignited public discussion and awareness of the vital role that unfettered journalism plays in any healthy, functioning democracy."

He writes:

"Sometimes it is easy to forget why we need it at all. Journalism can, at times, look pretty sordid, and few of us who work in it can claim to have never succumbed to the more base instincts of our trade. And in the wired world of the internet, with its citizen reporters and millions of sources, it is tempting to wonder why we need professional journalists at all.

But that noise is the reason itself. Never has cleared-eyed, critical, sceptical journalism been more necessary to help make sense of a world overloaded with information."

The three journalists, incarcerated since Dec. 29, 2013, were sentenced last year to jail terms from seven to 10 years for allegedly publishing false news and aiding a so-called terrorist organization.

Read Greste's full letter.

The Committee to Protect Journalists reported this week that 60 journalists were killed in connection to their work this year.