@devinplombier - I thought it was Rupert Murdoch and his son who enable FN to be what it is? While it might not be THE source of the problem, I believe that it is a large contributing factor, as it is where a large number of people get most, if not all of their information from; they don't have a lot of competition.
I don't remember the 70's as being particularly 'respectful' - I was in my 20's - but everybody has their own experiences.