reliable sources

Far from being autonomous computer programs oblivious to outside pressure, Google’s algorithms are subject to regular tinkering from executives and engineers who are trying to deliver relevant search results, while also pleasing a wide variety of powerful interests and driving its parent company’s more than $30 billion in annual profit.

A Google spokeswoman disputed the Journal’s conclusions, saying, “We do today what we have done all along, provide relevant results from the most reliable sources available.”

- How Google Interferes With Its Search Algorithms and Changes Your Results [WSJ, paywall]

Mr. Brin still opposed making large-scale efforts to fight spam, because it involved more human intervention. Mr. Brin, whose parents were Jewish émigrés from the former Soviet Union, even personally decided to allow anti-Semitic sites that were in the results for the query “Jew,” according to people familiar with the decision.
...
Finally, in 2004, in the bathroom one day at Google’s headquarters in Mountain View, Calif., Mr. Page approached Ben Gomes, one of Google’s early search executives, to express support for his efforts fighting spam. “Just do what you need to do,” said Mr. Page, according to a person familiar with the conversation. “Sergey is going to ruin this f—ing company.”

“It’s very convenient for us to say that the algorithms make all the decisions,” said one former Google executive.

interestingly, there're at least three separate instances in the article where they talk about filtering search results, related to the Jews. talk about proportional representation...