> willing to exploit [its] dominant market position to stifle competition
Google has, on multiple occasions, utilised its search engine to prop up or otherwise give an advantage to its own products over that of third parties. The most obvious example is Google+, however YouTube is also a prime example (the change to video search is fairly recent), as is Google Maps (which effectively wiped out the sometimes superior competition at the time), and Gmail (which was heavily advertised on Google.com).
While Google doesn't, as far as I know, "fix" search rankings to give themselves an edge they do sprinkle adverts for their products before search results (e.g. YouTube, Google Maps) or around the perimeter of the page (e.g. Google+, Gmail).
That all being said however: I'd take what Google does over what News Corp does any day of the week. Google might be a little corrupt, but News Corp is the poster child for abuse of position. Plus News Corp's lobbying has screwed up more than just their own specific market segment, it has had lasting effects on countries (and helped put innocent people in jail, literally).
At the end of the day as the internet stands in 2014, you have a great deal of choice. If you're tired of Google's shenanigans then hop over to DDG, Bing, or even Yahoo!