Regarding "All Lives Matter", there was indeed inquisition-level blowback. I vacillated between abhorrence, anguish, and rage as I watched the drama unfold.
For context: I was a Facebook employee at the time, and although I tend toward liberal ideals (despite a very conservative upbringing), I was appalled at the level of intolerance toward conservative views. Though I could not in good conscience vote for Trump (nor even throw away my vote on a third-party candidate), I continue to respect other humans who voted for Trump. That felt like a dangerous view to espouse as a Facebook employee, and I saw other employees behave with unease regarding their personal political views. Intolerance is dangerous all around, and in my opinion Facebook's internal politics have fallen (mostly unwittingly) into the trap of "not tolerating intolerance", using a liberal (pun intended) -- IMO overly broad -- definition of intolerance.
I ended up stating on most of my posts that I didn't like Trump and didn't want him to win but
- just tried to come up with an explanation for why so many others voted for him
- or tried to point out that the rules that allowed him to win had allowed democrats to win before
- etc
I still received loads of downvotes (I'd see my points rising and then falling sharply, seemingly when some part of the word woke up.)
All in all I came out positive wrt useless points but I still wondered about it.
And BTW: I still really don't like that man.
To call these comments "inquisition level", and potentially ignorant of the catastrophic history of suppressing dissenting opinions, is a pretty wild attack based on what they said. Your hyperbole seems far more damaging and dismissive than their comments.