"Objective" Newsreel & the Discourse of Journalism

Last week, we went over a few topics in dealing with newsreel, fabrication, construction, and artistry. So, we learned that newsreel wasn't quite as mechanically produced "raw" materials. Indeed, in some cases, it possesses a tone, an "accent" toward a particular intellectual and emotional response from the audience. I wonder to what extend the evolution of newsreel were affected by the purportedly "objective" journalism that came to be defined as a result of a similar procedure that formed Movietone products? Here I am referring to the evolution of journalism through which the need to produce news that could be catered to various political views hence available for purchase across the political spectrum. 

hadi