Sounds like we're well overdue for an adjustment in laws to ensure that such things cannot go unchecked. Perhaps it's also a sign that globalisation wasn't an exclusively good development as it's tended to make corporations above nations and government. I wonder how we can dramatically rein in all of them so that it's rather more equitable.
I think Zuckerberg and Sandberg may not even be trying to be "evil" - maybe they are, I have no clue - they're "just" trying to grow their company in order to "do good in the world". If you convince yourself of something enough then you'll tend to put the blinders on to everything else. But people working jobs need to ask themselves on a continual basis if things are OK or if on the other hand their work causes real pain and misery
Plus, almost by definition, you have to put the blinders on to work in public relations.