You make this case yourself, but I'll say it explicitly: the proven existence of a hidden censorship network implies abuse. There is no locus of power power without abuse; there is no hidden locus of power without extreme hidden abuse.

Psychological influence attacks against the public by governments are as old as time, and quite insidious. Remember on the day of Benghazi how the government tried to distract the public with the mention of that irrelevant video? They're still doing this. They think we're pawns that are easy to manipulate with information, even when the truth comes out and leaves egg on their face time and time again.

Every incidence of Facebook blocking like you indicate should be documented and dispersed publicly via non-controlled channels-- even 4chan would do, despite its recent clamp down on free speech. It's no secret that the US government is at the helm of these efforts to censor, silence, and manipulate the public.

I'm honestly waiting on the EFF, ACLU, and other human rights groups (and the public) to take a hard stance and declare outright that the Western neoliberal governments are malicious actors who are actively fighting against their citizens. It's been a long road from liberty to here, and we need to start fighting back.