> Iran threatens that all the time "Death to America" so if they don't like someone saying it back to them maybe they should stop?
Have you ever thought to pause and wonder why they say that?
Suppose you discovered that a UK oil company on your soil had been robbing you blind, and so you decided to nationalise your oil industry. In response to this, the UK and the US overthrew your government and installed a puppet regime. In this situation, I’m sure you would form a highly unfavourable view of the United States.
> Have you ever thought to pause and wonder why they say that?
Yes I have, it's because authoritarian regimes need eternal, external enemies to mask their own failures as they pilfer the country. You talk about Iran being robbed blind, nobody forced them to spend all of their oil revenue funding militants in other countries that kill people while Tehran runs out of water and their people suffer.
You seem to have this Euro-centric view that countries like Iran aren't responsible for their behavior or that they must be innocent because of some activities going on 70+ years ago (never mind, well, general history +- 30 or more years) but given that there are only a select few countries who are experiencing such circumstances (Iran, North Korea, Cuba) while most countries are just getting along peacefully, it makes more sense to understand that these countries are simply by virtue of their repressive governments the ones who are the actual problem. Iran can stop trying to build nuclear weapons and funding militants and then their problems will be solved.
The world doesn't have to tolerate bad behavior now just because of alleged American or British bad behavior in the past. If you want to argue that Iran gets to be forever mad about 1953, then maybe the US gets to be mad at Canada for 1812?