Iranian leadership has referred to Israelis as "so-called humans"; has demanded a "final solution" to Israel; has repeatedly denied that the Holocaust happened, including hosting a Holocaust denial conference; has referred to Israel as a "cancerous tumor" to be destroyed; ...

You don't have to look hard to find this stuff. These aren't mistranslations or misunderstandings. A lot of these translations were done by the Iranian Republic themselves in press releases!

These are less subtle than Trump's dog whistles about "when the looting starts, the shooting starts" — which was bad enough. These are obvious, repeated, consistent statements and actions.