Do you know the difference between Sunni and Shiite?

After all, wouldn’t British counterterrorism officials responsible for Northern Ireland know the difference between Catholics and Protestants?

For instance was Al Qaeda? “Sunni or Shiite?
Answer: Sunni

So  counterterrorism officials obviously and we the general public ought to be aware of the difference between a Sunni and a Shiite? And this is important it is not Islamic trivial pursuit, it is indeed respect for the 'other'.

 Briefly the difference between Sunni or Shiite is about the schism that developed after the death of the Prophet Muhammad,

 and how Iraq and Iran are majority Shiite nations 

while the rest of the Muslim world is mostly Sunni.

So there