You're right about Brazil's censorship problem. There's actually another article about how Lula is still trying to use courts to rein Flavio Bolsonaro's social media presence, with evidence like "the random number generator gave Bolsonaro's ballot number" (https://news.ycombinator.com/item?id=50229587)

Although fortunately, it didn't seem to be work: it seems Facebook and Twitter largely ignored Brazil's courts and Flavio Bolsonaro had a bigger social media presence despite "Lula's Army".