The mourning events for Ali Khamenei start in Tehran. He was the main leader of Iran. An air attack killed him in February. People say the USA and Israel did this. Millions of people are in the capital city now.
Many people wear black clothes. They hold pictures of Ali Khamenei. Some people hold red flags. This is a sign for revenge. The people shout against America and Israel. They want revenge for their dead leader. The government shows its power with this event.
The people do not bury him today. His coffin stays in Tehran first. Then people take him to holy cities. The funeral happens in Mashhad on Thursday. His son Mojtaba Khamenei is the new leader. He does not show himself at the event yet.