Thousands join the annual Arbaeen procession, where messages of justice and solidarity echoed far beyond Britain.

Massive Arba'een processions have been held across Indian-administered Kashmir to commemorate the martyrs of Karbala.

This year’s procession takes on a unique atmosphere, with Iran’s defense during the 12-day Israeli-imposed war having drawn widespread support.

Members of the Islamic Movement in Nigeria join other Muslims around the world in performing the symbolic Arba’een trek to mourn the martyrdom of Imam Hussein.

This episode is about Imam Hussain and the events of the Battle of Karbala, symbolizing a message of self-sacrifice and honor, and in defiance of aggression and injustice.

Millions of Muslims from across the world converge in the holy Iraqi city of Karbala to mark Arba’een.

An American named Abbas sets out on a long journey into the heart of Iraq, joining millions of Imam Husayn’s pilgrims in Karbala. What he witnesses there surpasses anything he could have imagined.