Extremists are targeting mosques and muslims.
Extremists are targeting synagogues and jews.
Extremists are targeting churches and christians.
Every religion is the target of extremist attacks.
Extremists themselves are graduating from rocks and bricks to firearms and explosives.
Why are extremists attacking religious groups?
Who are the extremist groups attacking religious groups?
Are there any commonalities in the justification(s) given by extremists?
Should religious groups have enhanced protection (as they are requesting)?
How should this situation be addressed long-term?

