Any story about Facebook, google or amazon is entirely too predictable on HN....
I think the single worst thing Facebook was documented as being involved was genocide in Myanmar, which was indeed certainly terrible. And while FB's poor policies are no doubt partly to blame here (obviously, blood on their hands), the people who actually did it, the state that aided etc, are likely more to blame. And similar horrors have been committed in other regions through mass hysteria instead spread through email or text messages (pogroms against strangers in India, etc).
Which is to say that Facebook has many terrible qualities and I'd love people to come together in the kind of social network I want instead, but still, I can't see much or any unique evil in Facebook compared to many systems and processes that it just happens to a part (choose from media, capitalist, elites, whatever).
So... you live in a cave?
The piles of lies and bullshit which comes from Facebook management is mountainous, about the only companies which I feel have bent the bullshit meter as far are oil companies and perhaps Comcast and they are despised as well.
Thus we have a dumpster file everyone hates but still uses.