So the first grand Wizard of the KKK, who has been dead over one hundred years is now a swell guy?
From what I understand, after coming to Christ, he repented his past. Some of his speeches are available online. From the tenor of them and the circumstances in which they were given, I'd say that I accept his repentance at face value. YMMV.
The love of Christ writ upon the heart can do amazing things.
Some historian must've found his Democrat voter registration card.