
1) Ethnic and religious slur
Found on
https://www.crosswordclues.com/clue/popoluca

Popoluca is a Nahuatl term (meaning `gibberish, unintelligible speech`) for various indigenous peoples of southeastern Veracruz and Oaxaca. Many of them (about 30,000.) speak languages of the Mixe–Zoque family. Others speak the unrelated Mazatecan languages, in which case the name in English and Spanish is generally spelled Popoloca. ==Various.....
Found on
http://en.wikipedia.org/wiki/Popoluca

(from the article `Mixe-Zoquean`) ...peoples inhabiting territories in southern Mexico. The Mixe-Zoquean peoples today comprise the Mixe, living in northeastern Oaxaca; the Zoque, ...
Found on
http://www.britannica.com/eb/a-z/p/94
No exact match found.