The FCC created the doctrine to make sure that broadcast networks met their obligation to the public by giving time to viewpoints other than their own and those they agreed with.
The FCC created the doctrine to keep broadcast media from being too one-sided and assure that all viewpoints received equal opportunity in the media.
The Fairness Doctrine (1949–1987) is a policy developed by the FCC (Federal Communications Commission) which required licensed radio and television broadcasters to cover controversial issues of interest to their communities, including by devoting equal airtime to opposing points of view.
It is a persuasion. As his use of tone suggests that he wants to convince his target audience to think about his opinions by stating facts which are true and cause us to reflect and do the right thing.