The Polish Computer Emergency Response Team (which is a government institution) published its report about how social media companies refuse to cooperate in the fight with scams and false advertising (because they benefit from it, obviously).
Facebook now blocks posts that link to this report.
On this subject this book details how false posts, disinformation and govt troll farm function. Evidence also of how public opinion is changed:
'This is Not Propaganda: Adventures in the War Against Reality'
A quick search came up with the download for an ePub or audio version:
ePub: https://zlib.pub/book/this-is-not-propaganda-adventures-in-the-war-against-reality-3emk0i5hubh0