You really don't need to go as high as 1600 ISO for outdoor work. You don't need to shoot at 1/400th of a second either on a subject like this. Use 200 ISO for good quality -- that still would you to use a very fast shutter speed to avoid camera shake.
The interplay of a group in black vs an individual in lighter colored clothing brings up a strong contrast. It looks like it was made at the big mosque in Casablanca. I recognize the window.
