Comment by DoctorOetker

Anyone who closely rewatches the surveillance footage of Mahsa Amini (at the fashion police) a few times, will quickly realize she was executed with a puff of gas, and the descriptions from Nazi concentration camp witnesses, and the description of the father of the weird cherry red bruises, and how she collapses on the footage combined with the behavior of 3 clearly complicit perpetrators before and after her collapse will quickly understand they used hydrogen cyanide, administered with some type of arm or sleeve-mounted bracelet.

The footage was clearly released to potentially reveal these sensitive facts, as the local police were thusly trying to prevent carrying the blame for her death, by showing the parts requisite for understanding.

If you need a more detailed description just reply to this comment and I will give more detail analysis of the footage.