LA Librería co-founders Chiara Arroyo, left, hands a book to Celene Navarrete in their bookstore in Los Angeles on May 2, 2024. “It’s so easy to be invisible in this city,” Navarrete told me as we walked toward the back of LA Librería, the brick-and-mortar store she and Arroyo own and run. “It’s changing the importance of keeping Spanish that …