As I said upthread, many commentators from Iran say that what you have said is propaganda, and one interview I saw today said that it was not 30000 (the UK government website does not say it was 30000 either but refer to a number of different figures from different sources) that is was 3117, and that the majority of the people killed were killed by the rioters who had firearms including police and innocent bystanders.
i personally don't support any killing by anyone, and I think what is going on is quite terrifying.
However, I do agree with you that personal safety is important, but it goes both ways. I went to a few MN threads such as one from January where there had been videos made by iranians in Iran who were saying that the problem had been the violence rioters, not the peaceful protesters, and they were showing support to their country against Israel and the US, but the videos are gone, not deleted by MN and not breaching any guidelines, but the accounts of the people who had made them have been closed, which almost certainly indicates that they were also in danger. And we know that, that there are groups who threaten and are violent to people who do not want Israeli and US intervention, or for Pahlavi to take over.
I was looking for the videos because someone upthread had asked to see some. @IrishSelkie please see above. The Guardian recently interviewed both "sides" of protesters in London, a few days ago, so if you look for that you will see iranians who say that anyone who supports Iran being bombed are "totally brainwashed" and say that the "30000 in two days" is not true and not possible.