Brazil can very easily block FB from operating there, but FB is a private American company and it can do what it wants on its own platform - it can allow or disallow any content as it sees fit. If Brazil doesn’t want to deal with this then… ban FB. IP block it. But they won’t, because they’re cowards with no local alternative (just like the Europeans with their technology).

Europe has many of the same issues, and they should do the same - ban FB/ban twitter/ban Google etc. but they never do lol.

But no it’s not an attack on Brazil’s ‘sovereignty’. Brazil chooses to allow Facebook to operate in its jurisdiction and Facebook chooses what content to disallow. The ball is is Brazil’s court: just ban it. But they won’t because just like Europe all the Brazilians can do is cry and complain but they don’t ever actually build anything themselves.