These photos show Tehran's Christians residents doing their shopping for the holiday season. While Iran is officially designated the "Islamic Republic," among its more than 66 million people is a small but important Christian minority. Most of Iran's Christians are Armenians and Assyrians, who remain relatively free to follow their faith.

The numbers of Protestants and evangelical Christians are said to be growing. For these people, life is often much more difficult. A number of Christian denominations still live in Iran today and include Assyrians, Armenians, Catholics, Protestants and Evangelical Christians. Although a minority religious group in Iran, Christians of Iran are free to practice their religion and perform their religious rituals.