Perhaps the starting point is to realize that it's not a binary black and white question ("fake" vs "real" news), that it wont be solved by an algorithm alone i

Perhaps the starting point is to realize that it's not a binary black and white question ("fake" vs "real" news), that it wont be solved by an algorithm alone in the short term, and that it's probably not a binary "block/allow" question. I dont know the solution but it might involve links along with news items that are contentious or opinionated, based on input from people, and I can't even begin to imagine how to make it fair. It's a hornets nest of opposing opinions, so whatever they do will likely be in gradual steps forward.