>>> do you think they really want to look at every flagged post?

You actually understood me very well. That's my secret point. I don't see why FB must do better than police. If someone insults me, then, well, I fight back, go to the police, prosecute, etc. That works well because there is the work of justice.

By displacing the problem out of FB into the realm of justice, I want to make two points :

1/ The social norm of what is acceptable or not acceptable speech is governed by the people, not by a single entity.

2/ If there are too many cases to handle for the judge, then, let's add more judges (in my country, justice department is starving for budgets).

FB has way too much power, that's its (totally fair) success but now, it's too big to be let alone.

People would be flagging less if they knew this means involving the police. Which would even be considered a good thing by many people, but then I have no illusion that there always are others who can't stand anything even mildly offensive.