The Journalist in British Fiction and Film

Why did Edwardian novelists portray journalists as swashbuckling, truth-seeking super-heroes whereas post-WW2 depictions present the journalist as alienated outsider? Why are contemporary fictional journalists often deranged, murderous or intensely vulnerable? As newspaper journalism faces the double crisis of a lack of trust post-Leveson, and a lack of influence in the fragmented internet age, ho...