“Please respect our pain.”Those are the words written in Spanish with a black marker on a sign taped to the door of David Sanchez’s business, Joyeria y Novedades Latinos.Inside the store, women are dressed in black with tired eyes. They say they will wear that color until they find out who is responsible for Sanchez’s death.Sanchez, 46, was shot April 12 outside a poultry processing plant in Gainesville.The culprits, still at large, took Sanchez’s 2009 Nissan Murano and money he would have used to cash plant employees’ checks.The vehicle was later recovered. The money is gone.