It is not deliberate from Facebook. See: https://blog.torproject.org/blog/facebook-and-tor
"A number of users have noticed that Facebook is blocking connections from the Tor network. Facebook is not blocking Tor deliberately. However, a high volume of malicious activity across Tor exit nodes triggered Facebook's site integrity systems which are designed to protect people who use the service. Tor and Facebook are working together to find a resolution."
>Google and Facebook are part of the military surveillance complex, it's as simple as that. They are privatized surveillance companies who serve the US government.
edit: typo