I just learnt the ban on #anonymity present in the #BrazilianConstitution ¹ is much weaker than I expected.
Basically it's only legal to out the real person behind a #pseudonym if it's used for illicit activities.
¹ Article 5th incise 4 says: «é livre a manifestação do pensamento, sendo vedado o anonimato;» (the manifestation of thoughts is free but anonymity is forbidden)