[LostPassword]

You can’t. But you can tell if they are anti-jihadi by their reaction to radical Islamic terrorism. I’ve seen/heard VERY few (2?) anti-jihadi Muslims over the last few years. And if they aren’t against it I’ll assume they are for it - they’re certainly ok with it.

[Blue Jays]

I have witnessed behavior from Muslim classmates, coworkers, and clients whom I thought were friends that has been an eye-opener.
In two situations, just having casual conversations alerted me to the absolutely seething hatred that lurked beneath.
My theory is that they were practicing taqiya to attempt to go unnoticed. They have frighteningly vicious tendencies, indeed.