The Response to Those Who Claim the Khawarij Have Ended

Question:
The questioner says: Some of those who claim to follow the da'wah (calling to Islam) assert that the Khawarij have ended, and that they rebelled during the time of 'Ali and then ceased to exist. What is the answer to their claim? May Allah reward you with good.

Answer:
This is a denial of reality. The Prophet (peace and blessings be upon him) informed us that they will not cease, but rather their rebellion will continue. Every generation that emerges from them is cut off, so their rebellion persists. They rebelled at a time, in the time of the Prophet (peace and blessings be upon him). The first to rebel in the era of the Prophet (peace and blessings be upon him) was the one who said to the Prophet (peace and blessings be upon him), "Be just, for you are not being just." Then those who came after him increased in the matter and declared the Companions disbelievers. They continued in the Umayyad state and the Abbasid state, and they continued in various centuries, rebelling and rebelling, and reality bears witness to this.
Reality bears witness to this, and the Prophet (peace and blessings be upon him) urged fighting them. He said, "Wherever you encounter them, kill them," .