The government of Iran includes it in murals in Teheran. An Iran-sponsored rebel group include the phrase in their flag.
> Tehran Radio, monitored in Nicosia on Tuesday, dubbed Nov. 4 ″Death to America Day.″
https://apnews.com/article/349374a3c1c5a4ec6c3fbefd1ac3f2ae
How could it be any more official?