Welcome to the life of anyone accused of any charge in Brazil. The Criminal Process Code (Código de Processo Penal) allows for up to 81 days of jail without a charge. After that time ends they can just release you without a charge and you can't do anything about it.
If at any time before that period ends, if the prosecutor's office has started any form of case you can still be held for at least more 102 days before your trial, up to 180 if anything that delays any part of the process happens.
This happens every single day in this country to many persons and the media is only making a fuss because now it happened to a bunch of rich white people with a charge that doesn't allow for bail / habeas corpus. I am totally in favor of changing it, but I don't think my reasons are the same as yours, sadly.
> There's videos of him literally saying his objective is to install socialism in Brazil.
Lula is just like Joe Biden. Makes for nice strawman arguments, but anyone who stops and thinks on what they can realistically accomplish will see they're more of the same, except with a rainbow flag coating.
Words are empty without action, and Congress is set to stop any action; Just like for the previous 10 years PT was in power, where they at best passed a few stopgap measures that did nothing to stop the long term destruction of the middle class that started in the 80s, further throwing Brazil into inequality.