People who don't learn from experience of others are bound to repeat them.....
Want to shortlist terrorist suspects for further processing..... go with logic......
1. Saudi's (it's literally written over the wall - jannah is always just a few block away from them - look back and see the signs)
2. Syrians (new kids on the block - mostly thanks to the West, before that they were nicely sandboxed by Assad)
3. Palestinians (no matter what you do, they'll always feel persecuted)
4. Lebanese (old scores to settle, perhaps)
5. Afghans that have been radicalized, directly by #1 and indirectly by #3's whining.
6. Look into French history and see if you've whipped someone's arse for no reason whatsoever, that's what disenfranchises citizens.
Above all, shortlist the whole family of anyone who wears a full face veil. They just don't wear it for no reason, there's always a past behind it, and mostly it's a horror story waiting to happen.
After all above is done, stay away from the Yanks and their "foreign policy", mostly it comes at the cost of their "friends" and enemies alike, only one left standing is them.