Unfortunately, in both cases, there are too few youth among the population in question to be able to tell the difference.
B-Chan's Rx For Muslim Riots
1. Cordon off the area. Evict all news media.
2. Declare martial law in affected area; institute curfew.
3. Shoot those who break curfew.
4. Go house-to-house in affected area; question and detain anyone suspicious as enemy combatants.
5. Interrogate detainees for intelligence purposes.
6. Convene military tribunals. Revoke citizenships of those found to be a threat to national security.
7. Execute worst offenders pour encourager les autres.
8. Deport ex-citizens.
9. Continue process for 5-10 years until affected areas are depopulated and/or free of terrorists.
10. Repopulate areas with persons of Judeo-Christian culture.
RE number 10: problem is where will the Judeo Christians come from, as Western Europe is now largely atheist and birthrates are also very low among Europeans?