Facebook in particular has been trying to dance on the head of the pin between being a platform for free speech and a publisher... They want to be a free speech platform because it allows them liability protection, but they also want censorship, which makes them publishers and makes them liable for the content.
Nothing to fear if you have nothing to hide; that was the mantra of the nazis... consider that for a moment.
Zuckerbergs intentions is NOT good... I'm sorry that you haven't been able to recognize this.