The court also concluded that because the girls, aged 15 and 11, did not like “trap” or “sertanejo” (folk) music, their home curriculum had also failed to properly educate them in cultural diversity, despite the fact that they are both accomplished pianists and speak multiple languages."
I found some Brazilian coverage. https://www.gazetadopovo.com.br/vida-e-cidadania/juiz-que-co... says something somewhat different than the text you copied:
"Ainda segundo a defesa, entre os argumentos usados pelo magistrado estaria a fala de uma das adolescentes que disse não gostar de estilos musicais como funk e sertanejo. A afirmação teria sido interpretada como demonstração de “suposta discriminação e preconceito na educação” domiciliar ministrada pelos pais, que foram condenados criminalmente."
That is:
"According to the defense, one of the arguments used by the judge was a statement made by one of the teenage girls, who said she did not like musical genres such as funk and sertanejo. The statement was reportedly interpreted as evidence of “alleged discrimination and prejudice in the home education” provided by her parents, who were convicted of a criminal offense."
This is a claim made by the defense attorney in the appeal, and was not, from what I can tell, a conclusion determined by the court.
I was not able to find anyone linking to the court's judgement.
Also:
"Os dois foram sentenciados a 50 dias de detenção em regime semiaberto, pena posteriormente substituída por medidas alternativas." https://claudiodantas.com.br/filha-de-casal-condenado-por-ho...
The 50 days in semi-open detention was later replaced by alternative measures.
From what I can tell,
"Regime fechado" (closed regime) means the sentence in a maximum or medium security establishment;
"Regime semiaberto" (semi-open) means its in an agricultural, industrial or similar establishment colony
"Regime aberto" (open) is in a sheltered house or appropriate establishment.
I can't think of a US English equivalent to "regime semiaberto", but it seems less than what we think of with "jail". Like, https://pt.wikipedia.org/wiki/Regime_semiaberto links to an article describing how in the US "Programas tais como o regime semiaberto têm diminuído no país, não existindo as chamadas "saidinhas" temporárias, tão comuns no Brasil." ("Programs such as the semi-open prison system have been on the decline [in the US], and the so-called temporary "day passes," which are so common in Brazil, no longer exist")
Or to put it in other words, it's being ignored by all other news sites. One would think treating children as property of the state, and requiring explicit indoctrination in "tolerance and diversity", would warrant more attention from our media that is so concerned with authoritarianism.