Complex sentence: Later White Revolution leader Billy Roper took the stage and stated: "I'm here to say that's a white man!" while pointing to Pierpont, who fervently sieg-heiled from behind his stacks of merchandise.
Split into simpler sentences: Later White Revolution leader Billy Roper took the stage, he defended Pierpont's skin colour. Roper bellowed, pointing to Pierpont, who fervently sieg-heiled from behind his stacks of merchandise.