This report only confirms what's already known: that this was no accident but a grave crime. Excessive use of force in the form of tear gas violates FIFA'S rules and international law — to which Indonesia must adhere — which is why those responsible now need to face the consequences.
This tragedy is evidence of a deeper structural problem in Indonesia. Though needed, investigating police actions and holding those responsible accountable isn't enough. Police aren't equipped or trained to properly deal with soccer crowds, despite fans having an infamously violent culture. On top of that, Indonesia's sports facilities lack standard security protocols. A deeper review needs to happen.