And it is meant to feel meandering cause that is how this period feels for people trying to study it. There are many cases that we don't know what happened. We just know that the people were killed/disappeared. The perpetrators were never brought to Justice. We are not even sure who the specific perpetrators are in a lot of cases.
This is how the Brazilian military dictatorship operated. There are people in Brazil who want to go back to this period. They say that everything was better. The truth is that a lot of stuff that was bad, was so bad that we don't even have the records to properly reconstruct what happened.