By Virginia Heffernan, Los Angeles Times (TNS) “My beautiful 4-year-old daughter, Dayla … ” Almost as soon as the woman started to speak, Andrew Yang flinched. He inhaled sharply. Along with other Democratic candidates, Yang was speaking at a gun safety forum in Des Moines on Saturday. He seemed to sense what was coming. His right fist rose to cover his mouth, a cross-cultural reflex of the shaken.