use uMatrix Firefox add on to control 3rd party scripts.
Zuckerberg's propaganda machine isn't the only site that allows 3rd party privacy intrusion
https://www.fastcompany.com/40561615/facebook-login-is-letting-online-trackers-slurp-up-your-data
Facebook login is letting hidden online trackers slurp up your data
Third-party tracking code, used across the internet to track user behaviors on websites, optimize ads and other purposes, has been grabbing Facebook user information on websites that support logging in through the social media platform, Princeton researchers report. When users log in to websites using Facebook’s Login feature, trackers can grab Facebook user IDs and … <a href="https://www.fastcompany.com/40561615/facebook-login-is-letting-online-trackers-slurp-up-your-data" class="more-link">Continue reading “Facebook login is letting hidden online trackers slurp up your data”</a>