BSM1
What? Me worry?
You tell me. Here are your choices:
A. The restaurant in located in downtown Tehran.
B. The restaurant is located in downtown Little Rock.
A masked man in black barges in screaming in Arabic. Do you tackle him or hit him with a chair in both scenarios?
I seriously doubt if I will ever eat in a restaurant in downtown Tehran by design or downtown Little Rock by choice. However, to address your point, someone yelling "Allahu Akbar" at the top of his lungs would probably not seem out of place in any restaurant in Iran.