None of us, save for George Zimmerman, will ever know exactly what happened the night he shot and killed Trayvon Martin at close range with a bullet from his 9 millimeter semi-automatic handgun. Reactions to the killing and Zimmerman’s eventual acquittal fell along the usual and predictable faultlines of American life: African-Americans and white liberals decrying the verdict as racially tinged, with most other whites and conservatives pointing to inconclusive evidence in supporting the acquittal. According to a Pew Research Center poll conducted early this week and cited by NPR, “86 percent of African-Americans expressed dissatisfaction with the verdict, compared…