I mean in the broadest sense that's a cultural question and most big online platforms have decided that it is their place—Facebook and Twitter in particular—bec

I mean in the broadest sense that's a cultural question and most big online platforms have decided that it is their place—Facebook and Twitter in particular—because of pressures from the public. In a much, much narrower sense, we are talking about Google and not an online platform. Google's explicit mission is, “to organize the world's information and make it universally accessible and useful.” Like, filtering out misinformation is literally the thing that Google says is its purpose.