Oh very creepy stuff from MP in HoC just now.
Never mind how fucked up things are now, he says; how are the new media going to be fucked up?
Google is massively dominant search engine and actively suppresses other search engines. Google News is major driver to news sites, ie influences which news we read.
So Google has the capability to promote and suppress news stories, if it so desires.
I don't know of any examples of this yet wrt Google News, but Google Search isn't purely algorithmic. There are tweaks, it sells rankings and does also blacklist (there's already been a spat with those cheapest-price-finding search engines). Don't know how it ranks news, but there must be some human-influenced mechanism.