Sure, however the issue is how does this news 'bubble up'? Because the International Facebook community are sharing and commenting on it organically, or becaus

Sure, however the issue is how does this news 'bubble up'? Because the International Facebook community are sharing and commenting on it organically, or because a group of liberal curators decide that's what Facebook users will see in the trending column? As far as I understand, it's not the news that's being promoted (let's display this article on global warming, for example) that's the issue here, it's the news that's being suppressed (this Donald Trump post is getting popular, but I don't like his views so let's not display it).