A turban is a sombrero, of a sort. Sombrero is just "hat" in Spanish. Besides which, the Ecuadorans don't wear anything like the typical Mexican "Sombrero". Of course neither do most Mexicans, they prefer something more like a straw cowboy hat, except on special occasions of course, or if they are in the "Musica del Norte" business.
But, yes, expect Hispanic homicide bombers. Jose Padilla is Hispanic, and was going to build a dirty bomb.