One way to go about it could be to force all these data collectors to show what they know about us, how much they shared and with whom, and allow us to delete that data on request. I'd really like to know everything FB tracks on those like buttons, it's probably an obscene amount of personal data.
Once people see how much data they retain, there would be a righteous outrage. These datasets have been provably used to manipulate elections, subvert democracy and target us with fake news. I'd like a report of what fake news and politically motivated ads I've been served by their recommenders. Maybe if they are forced to come out in the clear about what they do with our personal info, they would change their tactics. We need reverse surveillance on FB and the other tech giants and ad companies.