Let's count. Power consolidation (post-revolution): 10-20k. 100k during the first gulf war, but I think you should put that on the US (and maybe Irak, but it's the US that pushed Irak to attack Iran), then a bit more than 50 execution per year on average for 30 year. 100-300 in 2019/2020, and 15k-35k for the 2025/2026 protests. So even if you take the higher bound, that's 66k max, and if you count the gulf war (which was defensive, against US-led Iraki), 166k. But a reasonable estimate would not count the gulf war, and would be 35k over 40 year.
Weirdly, that's less than the number of saudi Arabia slaves who died in the last 20 years. But most of them are African, so they don't count, if I understand why Saudi Arabia are our allies.