Sunnis and Shiites

People can be ID'd as one or the other because of their name, or the way they wear a veil, or the mosque they pray at, or the products they buy, or the company they keep.

If you wanted to kill a lot of Sunnis you could wait outside a Sunni mosque on the holy day.

Sunnis and Shiites
Thank you.

...and if someone changes their name, their clothing and doesn't attend a mosque?

They might get killed anyway. Like the Christian crusaders who ravaged the Middle East a millenium ago, these guys reckon that God will sort out the mistakes.

Kinda like telling the difference between a Catholic and a Protestant in Belfast.

Exactly. Questions such as "What street do you live on?", "What school did you attend?", "Where do you work?"

Rangers or Celtic?

That's Glasgow.

Here is a good essay I read recently on this subject:

http://glimpseofiraq.blogspot.com/2005/02/sunni-shiite-iraq.html