Google's own internal documents leaked
Google's CEO, Sundar Pichai, & Google's Vice President, Karan Bhatia, had previously testified to Congress that the search engine wasn't "manually intervening" or "utilizing blacklist" in search results.
Based on Google's own internal documents leaked by Zachary Vorhies, Sundar Pichai and Karan Bhatia lied to Congress.
This particular blacklist shows hundreds of conservative websites which were censored on news search results for Android. There is an obvious political bias. For example; Steven Crowder, Michelle Malkin, Gateway Pundit, and RedState made the blacklist.