Day of Ashura : Christian people in the holy shrine of Imam Husayn
Day of Ashura is a day Imam Husayn and all 72 of his companions were killed to revive the religion of God from utter distortion, therefor people who believe in the unique God and have different religions across the world mark the day of Ashura in every year.
You can see Sunni Muslim people and christian people along with Shia Muslim people who commemorate the day of Ashura.
Christian people in the holy shrine of Imam Husayn on the day of Ashura at Karbala, Iraq.