The difference is Helms was not in the Klan. I challenge you to find a quote as egregious as this:
He would never fight
"with a Negro by my side. Rather I should die a thousand times, and see Old Glory trampled in the dirt never to rise again, than to see this beloved land of ours become degraded by race mongrels, a throwback to the blackest specimen from the wilds."
Wow. To put it into some perspective, he was Coltrane's age now when he uttered that.