2. If you know someone influential from country that Iran trades with, let them know. It is bit difficult as no country in Western world trades with Iran. And China doesn't give two shits about human rights abuse, same with India. South Korea and Turkey are the largest importer after those.
3. Upvote so that chances of someone who could help with first two could see this thread.
4. Don't talk only to "influencers" — also talk to your co-workers, your neighbours, your internet community. Raise awareness.
5. Don't just "talk to". Ask. Ask (exiled) Iranians what they think about the situation.
I was traveling around in Iran for some months, and one big takeway for me was that there is a huge gap between the highly educated, incredibly friendly and open-minded population and their cruel medieval rulers. I still don't really understand the historical situation in which the mullahs were able to come to power.
Easy. There was US sponsored coup against democratically elected government. It strengthened monarchy which was then seen as illegitimate by large parts of population. It also made the same parts of population dislike and distrust Americans.
So when there was yet another coup, many people supported it. A lot of those people ended up on the bad side of mullahs (like politically or career oriented women). But original support was support "against" rather then pro.
I'm not trying to justify the coup but there is no way most people would consider the elections in 1952 to be democratic by modern standards. Mossadegh ignored half of the votes (primarily in rural areas), all the MPs elected in Kurdish areas were barred from taking their seats. They actually simply stopped counting when the government got a favorable result. It wasn't that different from the elections in Poland in 1947 or in any Eastern European country where socialist/communist parties 'won' the elections
This us destroyed our leadership and we hated their goverment more interpretation is something I had from Iranians who later run away. They were happy about government going down, not happy about replacement. But the original government being seen as foreign imposed and illegitimate was strong feeling.
Eastern European countries also distinguish between "this was crappy but our thing and even had some democratic tilt" from "Russia/Germany supported full coup or came to colonize".
The Mullahs in Iran didn't even fairly win the election in 1980 or 1984 making their regime less legitimate than that of Morsi's. But it's pretty clear that they were the most popular politic force in the country. They possibly still are. I wouldn't be particularly surprised if the majority of Iranians still believe that all women should wear hijabs, criminal should be publicly hanged from construction cranes and blasphemous/secular journalists should be jailed. If that's what's the point of having a "democracy" in such a country? Wouldn't a secular/progressive dictatorship be preferable (assuming it's even possibly for it to exist)?