The principle being pushed here is that SYG means a white man has no right to defend himself against a black man and a black man has every right to defend himself against anybody.
Precisely. Sure, Quanell the 10th is trying to argue that the law properly applies here because the assailant was armed, where Trayvon was not... but had the racial roles in the Sanford, Florida incident been reversed you would not hear that argument.