Customers ask Wal-Mart stores to remove book Beloved by Mexicans for his dim wits, street smarts and playful disposition, long-running comic book character Memín Pinguín — a little black boy whose face resembles a monkey — is at it again. His zany adventures chronicled in a hugely popular book series for decades are up for sale at your neighborhood Wal-Mart store in the Libros en Español section, right next to the store's cadre of African-American books. The latest issue: Memín para presidente. By Shawnedria McGinty's American standards, the image was shocking. The African-American woman who was shopping at the store...