Yeah breitbart is probably the most neutral source on this issue.
https://www.usatoday.com/story/tech/news/2016/06/10/google-s... http://www.dailymail.co.uk/news/article-3785801/Is-Google-ma... http://www.washingtonexaminer.com/google-denies-manipulating... https://www.redstate.com/streiff/2017/05/30/google-gave-hill...
I checked it myself during the time and Breitbart article is entirely correct.
because "Biased" isn't really the term that Breitbart deserves. "liars", "frauds", "propaganda" are closer.
What scares me more is when organizations claim to be impartial, like Google, Facebook, or the Times. Claiming to be impartial is claiming to represent absolute truth.