A tall, glittering tree erected outside a shopping centre in Baghdad could be considered an incongruous display of Christmas festivity in mainly-Muslim Iraq. But the 7-metre-high tree at Sama Mall in the south east of the capital, adorned with tinsel, stars and bells, is one of a number of decorations put up by residents and business owners in solidarity with the country’s Christian minority.

Muslim businessman Yassir Saad has spent around £19,000 on a huge artificial tree to help Iraqis “forget their anguish” over the war against Isis.

The 85-foot decoration is on display in a Baghdad theme park. Visitor Saba Ismael said it “represents love and peace”. “I wish all Iraqi Christians could return to Iraq and live normal and peaceful lives,” she said.

Iraq’s small Christian community has been persistently persecuted since the US-led invasion of the country in 2003.

Iraqi policemen cordon off the Virgin Mary church in the Karrada neighbourhood of the capital Baghdad and check people as they arrive to attend a Christmas mass (Getty) (Getty Images)

Extremists marked Christian houses in Mosul – Iraq’s second-largest city and an Isis stronghold since 2014 – with the Arabic equivalent of the letter “N”, for the derogatory term Nazarene, and issued threatening ultimatums to leave the city or face death or forced conversion to Islam.

Ammar Hussein, a member of staff at Sama Mall in Baghdad’s busy shopping district Karrada, which has a significant Christian minority, said that Muslims from many walks of life had been buying Christmas trees and other seasonal products.

“Muslims love to share this holiday season with their compatriots,” he said, adding that injustices towards the country’s Christians “are not caused by Muslims but by those who hate Iraq”.

A married Muslim couple said they were buying a small Christmas tree and some gifts because they chose to celebrate Christmas “like the rest of the Islamic holidays”.

“This is the most joyful time of the year,” they said. “We do not need proof of coexistence. We are one people.”

Christians in a recently liberated town near Mosul celebrated Christmas this year for the first time since 2013.

Hundreds of Iraqi worshippers still living in exile travelled to the main church in Bartella, an Assyrian Christian town just 13 miles east of Mosul, on Christmas Eve.

Iraqi Christians celebrate liberation from Isis Show all 10 1 /10 Iraqi Christians celebrate liberation from Isis Iraqi Christians celebrate liberation from Isis Iraqi Christians celebrate liberation from Isis An Iraqi Christian prepares for the first Sunday Mass at the Church of the Immaculate Conception in Qaraqosh Reuters Iraqi Christians celebrate liberation from Isis Iraqi Christians celebrate liberation from Isis Iraqi priests hold the first Sunday mass Reuters Iraqi Christians celebrate liberation from Isis Iraqi Christians celebrate liberation from Isis Iraqi Christian soldiers attend the first Sunday mass at the Grand Immaculate Church since it was recaptured from Islamic State in Qaraqosh Reuters Iraqi Christians celebrate liberation from Isis Iraqi Christians celebrate liberation from Isis An Iraqi Christian soldier holds his weapon during the first Sunday mass Reuters Iraqi Christians celebrate liberation from Isis Iraqi Christians celebrate liberation from Isis An Iraqi Christian soldier lights a candle Reuters Iraqi Christians celebrate liberation from Isis Iraqi Christians celebrate liberation from Isis Iraqi priests hold the first Sunday mass at the Grand Immaculate Church since it was recaptured from Islamic State Reuters Iraqi Christians celebrate liberation from Isis Iraqi Christians celebrate liberation from Isis Iraqi priests hold the first Sunday mass Reuters Iraqi Christians celebrate liberation from Isis Iraqi Christians celebrate liberation from Isis Iraqi Christian soldiers attend the first Sunday mass at the Grand Immaculate Church since it was recaptured from Islamic State in Qaraqosh, near Mosul in Iraq October 30, 2016. REUTERS/Ahmed Jadallah - RTX2R245 Reuters Iraqi Christians celebrate liberation from Isis Iraqi Christians celebrate liberation from Isis An Iraqi Christian soldier attends the first Sunday mass at the Grand Immaculate Church since it was recaptured from Islamic State in Qaraqosh, near Mosul in Iraq October 30, 2016. REUTERS/Ahmed Jadallah - RTX2R256 Reuters Iraqi Christians celebrate liberation from Isis Iraqi Christians celebrate liberation from Isis Iraqi Christian soldiers attend the first Sunday mass at the Grand Immaculate Church since it was recaptured from Islamic State in Qaraqosh, near Mosul in Iraq October 30, 2016. REUTERS/Ahmed Jadallah - RTX2R269 Reuters

“It is a mix of sadness and happiness,” Bishop Mussa Shemani told Reuters. “We are sad to see what has been done to our holiest places by our own countrymen, but at the same time we are happy to celebrate the first Mass after two years.”

Bartella is still in a war zone, and armed guards surrounded the church. Most of the surrounding houses have been destroyed, and the worshippers arrived in a convoy of buses under heavy guard. Many more were unable to make the trip.

The church in Bartella was defaced by Isis militants, but worshippers have been able to return (REUTERS/Ammar Awad)