What is so interesting about Kharijites?

The Khawarij/Khariji sect (although not as old as the Shia sect) appeared earlier than all the other Muslim sects (i.e., all the Sunni madhabs, Zaydis, all the Ismaili sects, the Ghulats and the new age Muslim sects like Wahhabiyya/Salafiyya, Ahmadiyya ..etc).

One of the most common misconceptions about the Kharijite is that all the sects formally known as Kharijites are extinct now. Not true! At least we know that one of the Kharijite group, the Ibadiya, still exist quietly in the Muslim world. In fact, I think they (Ibadi) are the only surviving group among the Kharijite. I remember reading a hadith from Imam Ali (may peace be upon him) after the battle of Nahrawan that foretell (prophecy) of a single surviving group among the kharijite. Need to look this up.

I think it would be interesting to look into some of the Kharijite sects.

Quick notes about Kharijite/Khawarij

1. They were members of a group that seceded from Imam Ali's (may peace be upon him) party after the arbitration at the Siffin.
2. The earliest Kharijites were also known as Haruris (from the name of the place "Harura").
3. Their main slogan was lā hukma illā li-llāh or No judgement but God's. They were the hypocrites who forced Imam Ali (as) to accept the arbitration with Muawiyah and later came out against the arbitration when their own candidate (Abu Musa Ashari) was deceived by Muawiyah’s negotiator.
4. Their core belief is that whoever committed a grave sin is an apostate and is damned to hell.
5. Some of the major Kharijite's sects are Azariqa, Bayhasiyya, Najadat, Ajarida, Fuddakiya, Sufriyya, Ibadi and others.
6. Kharijites do not believe in the intercession (unlike the Sunni and the Shia sects)

To be continued...