The lineage of the Umayyads goes back to Umayyah, who was one of the wealthy in Mecca, and one of his descendants was Abu Sufyan, the father of Muawiya, the founder of the Umayyad dynasty. Muawiya's mother, Hind, ate Hamza's liver, and his aunt, was the bearer of firewood.
Hind asked a fighter named Wahshi to kill Hamza, the uncle of the Prophet Muhammad. Hamza was fighting the polytheists, and when he returned from the battle, Wahshi shot him and killed him. Hind came after the battle and slit Hamza's stomach and tried to eat a piece of his liver, but she did not like it, so she spat it out.
The bearer of firewood, Muawiya's aunt, used to carry the thorns of the desert, to throw them in the path of the Prophet Muhammad when he went to the mosque in order to harm him.
Muawiyah was a wealthy merchant, and one of the leaders of the Quraysh who opposed the Prophet Muhammad and his call. He was a leader of the polytheists' army, hostile to Muslims, used to harm the Prophet Muhammad, and he participated with his father to kill the Prophet. Muawiyah embraced Islam when the Muslims conquered Mecca, so the Prophet raised his status and made him the ruler of Najran. However, Muawiyah, along with his father, tried to assassinate the Prophet in the Battle of Tabuk.
After the death of Muhammad during the reign of Othman, Muawiyah was interested in collecting money, usury, and persecuting the righteous. Then he came to power and wanted to destroy the pulpit of the Prophet twice, just as he wanted to exhume the grave of the Prophet's mother. Muawiyah took a throne and guards, and surrounded himself with the splendor of the king. And he made the succession hereditary when he entrusted his son Yazid with the mandate of the Covenant, after him.
Yazid was famous for corruption, drinking a lot of wine, and loving boys. He was also known for his cruelty, hatred, hypocrisy, and departure from faith. He caused fear to the people of Medina, and demolished the Kaaba. In general, society in the Umayyad era was characterized by much luxury, in contrast to the previous eras of Islam.
A Christian man fighting Yazid's army
Al-Hussein, the grandson of the Prophet Muhammad, objected to Yazid's rule and did not pledge allegiance to him. Yazid's army killed Hussein and those with him in the battle of Karbala. Among the fighters with Hussein was a Christian man named Wahb bin Abdullah, who had been married for only twenty days. When Al-Hussein arrived at the tent in which the Wahb family lived, Al-Hussein asked Wahb's mother: Where is your son Wahb? She said: He went out as usual to fetch water. Al-Hussein left with his companions towards Iraq. When Wahb returned to his family, his mother said to him: My son, as if Christ Jesus had visited us this day. And he asked about you. Wahb wept and said, O mother, I saw in a dream Jesus, and there were men beside him who were awe and dignity. Christ said to me, O Wahb, are you from my nation? I said yes. Oh Wahb, you have to help Al-Hussein tomorrow in Karbala, and know that you are with him in Paradise. Wahb decided to join Al-Hussein, so his bride clung to him. So she and his mother went with him. The battle began, Wahb’s mother said to her son: Get up, my son, and support Al-Hussein. So he emerged to fight, killing 31 fighters.
The Battle of Karbala has become a symbol for many Muslims and considers it a political revolt against injustice. The tomb of Al-Hussein in Karbala became a holy place visited by the believers. They also commemorate the battle every year, and millions of Muslims go to Karbala, along with Christians and others.
ISIS attacked this peaceful march several times and killed innocent people.

A Christian from Ireland walks with the pilgrims and talks about her recovery from cancer

https://www.youtube.com/watch?v=GYF-lKtZco8

Christians share our big event and walk to my leader IMAM HUSSEIN

https://www.pinterest.com/pin/388224430353627360/

Christian bishop visits Imam Hussain shrine

https://www.youtube.com/watch?v=ycxVu0oy534

CHRISTIAN PRIEST pays homage to Imam HUSSAIN

https://www.youtube.com/watch?v=xAaIq3H2GtM

World's Largest Annual Pilgrimage on in Iraq Despite Threat of ISIS Attacks

https://www.ndtv.com/world-news/worlds-largest-annual-pilgrimage-on-in-iraq-despite-threat-of-isis-attacks-1249773

Millions of Muslims take part in mass pilgrimage of Arbaeen – in spite of
Isis
Isis has attacked the nearby city of Karbala using suicide bombers

https://www.independent.co.uk/news/world/middle-east/20-million-muslims-march-against-isis-arbaeen-pilgrimage-iraq-karbala-a7436561.html