The way Facebook chooses articles for its feed has no effect on anyone's free speech. Comparing it to banning books is silly.
"Was it funded by the US army? First the university said yes" it's US led information warfare [1]
[0] http://www.pnas.org/content/111/24/8788.full [1] https://www.theguardian.com/science/head-quarters/2014/jul/0...