This Wednesday, millions in Iran will mark Chahārshanbe-Sūri, the Wednesday Feast. This ancient festival marking the last Wednesday of the year (on their calendar), dates to 1700 BCE, in ancient Persia's Zoroastrian Era. People build bonfires in the streets and dance over them. The fires are meant to struggle against the darkness and bring the sun's return in the early morning.
"کوروش کبیر گفت برای
جنگیدن با تاریکی آتش روشن میکنیم و با شادی و نور به سراغ دشمن میروی"
"To defeat the darkness we set the fire and face the enemy down with light and joy." -Cyrus the Great
My friend in Iran mentions this in the context of their struggles against their current government and their desired democratic reforms. Pray that those brave souls standing up to injustice can keep the fire burning until a new and better day arrives.