Do you know WikiIslam ?

[Angrboda]

I'm going to take a shot in the dark and suggest that they think it's justified.  So by saying it's not justified you mean for you.  This type of dishonesty simply leads to people not trusting you.

Well, no, not just for me. If you checked the link you would find :

"Traditional Muslim historical sources and mainstream Muslims have viewed the Kharijites as religious extremists and having gone out of the Muslim community. Many modern Muslim extremist groups have been compared to the Kharijites for their radical ideology and militancy."

ISIS and al-Qaeda being the obvious examples of such extremist groups.

That doesn't refute what I said. For them, it's justified. For you, it's not.

You remind me of a cartoon a math professor had on his door in college. It showed a long line of people at the professors door. It was captioned, "I can't solve the problem, but neither can these 1,000 people."

Your complaint is nothing but an ad populum argument.