If this is at all similar to the antitrust investigation I don't think they'll have to look far to show that FB used consumer data inappropriately and manipulated advertising prices.
I remember a few articles, say the 2-factor phone numbers used for advertising.
> and manipulated advertising prices.
I don't remember this though. Do you have a link somewhere?
https://www.vox.com/2018/3/7/17087468/facebook-ad-prices-inc...