Killings of unarmed black men are now commonplace in the USA. These tragedies are also opportunities for honest reflection on our role in dismantling white supremacy. Trayvon Martin was a 17-year old African American high school student who was shot and killed on February 26th 2012 by George Zimmerman, who was later found not guilty of his murder. Martin was unarmed. Florida’s “Stand Your Ground” law - which enshrines the right to self-defense even when lethal force is used against someone who doesn’t have a weapon and where there are no witnesses - played a prominent role in Zimmerman’s acquittal....