Extremely.

This is coolbert:

Excessively alarmist headlines the Hal Turner Internet web site maybe this time not so excessive!

"FLASH: Black flag is risen on Razavi Shrine - Islam is going to all-out war"

From https://halturnerradioshow.com | HAL TURNER | 17 OCTOBER 2023.

"FLASH: Black flag is risen on Razavi Shrine - Islam is going to all-out war"

"With the bombing of Al-Ahli Baptist Hospital in Gaza, which killed over 500, and is being BLAMED on Israel and the U.S., the black flag is risen on Razavi Shrine in Mashhad, Khorasan province, Iran, shown above. This is in Islamic Scripture!"

"When the black flags come from Khorasan go to them, even if you have to crawl on snow, for among them is the Khalifa from Allah, the Mahdi"

"According to hadith (prophetic tradition or report), the black flag was the flag of the Prophet Muhammad and it was carried into by many of his companions. The image of the black flag has been used as a symbol of religious revolt and engagement in battle."

See all embedded video the Hal Turner article.

See too the Imam Reza Holy Shrine web site. That slide show very good!

See also a history of black flagging. Not an object or a tradition confined to Islam.

coolbert.