Well, that explains a lot. So the web becomes an engine for supporting preconceived notions instead of an agent of truth. Very disturbing. I think I'll switch back to Dogpile instead of Google. Or maybe DuckDuckGo, here is their take on filter bubbles.
But like that page suggests, Google is ok as long as you go beyond page 1 of the search results. But I will give Dogpile a peek, thanks for the tip.