Why did/do the Arabs hate the Iranians so much?

Technically, yes they would be. However, Anti-Semitic is used today in reference to hatred towards Jews. That's technically wrong though.

But we use a lot of words wrong. We use Hispanic in reference to people who are not from Hispania (Iberian Peninsula. We use Latino in reference to people who are not Latin (Italian).

Etc. I try to be correct, so I wouldn't use words wrongly like that.

The arabs happen to have a different language grouping too Semetic isn't strictly the land area.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.