opinion: the AWB is too afrikaans for it to be likely that that is where he picked up his nazi shit. then-era ZA still had a lot of AF/EN animosity, and in a couple of biographies of the loon you hear things like "he hated life in ZA as a kid because .... {bullying}", and a non-zero amount of that may have stemmed from AF bullying EN
(icbw, it's definitely not something I've studied the history of the loon's tendencies, but can speak to (at least part[0]) of the ZA attitude)
(([0] - I wasn't alive at the time it would've mattered to him, but other bits of the cultural attitudes lasted well into my youth))
just to be clear: not providing excuses for felon. just think it's unlikely that that was the avenue