Despite accusations of liberal bias, Facebook’s Mark Zuckerberg insists that “rigorous guidelines” govern what appears on the Facebook news feed’s “trending topics” section.
Yeah, and if those guidelines were any more slanted, they’d be a tourist attraction in Pisa.

Yup, socialists got themselves lotsa guidelines, lots.
Pffft, the Tower of Pisa is less than 6 degrees off vertical. FB guidelines would have it angled down like the Chunnel entrance.
G.K.Chesterton said – We need not fear censorship of the press, now we have censorship By the press.