Have you seen a dead body in your life? Have you seen a street stained with blood being washed with high pressure water? Have you seen parts of the brain of a fellow citizen on the sidewalk, the same guy who was standing next to you 30 seconds ago? 36'000 people were killed in just two nights. It was like 5 battles of D-Day, but in a shorter amount of time.
And you are conveniently forgetting the fact that most of the people came out when Reza Pahlavi requested a mass protest.
And then you portray it as if the people had no agency in this, they didn't know that 1500 were killed in the 2019 protests. And a similar number in 2022-2023 over Mahsa Amini, for protesting the actions of the "ethics police" killing a young girl over a few strands of her hair.
In the end, everyone is responsible for this other than the actual tyrants running the régime and the blood thirsty mullahs doing the actual killing.