"I believe that is what you're trying to prove, not I. I only admit that when Hogwarts was infiltrated by Death Eaters, I walked into the Astronomy tower, and the other Death Eaters were egging him on to kill Albus. Seeing as I had already promised both his mother to protect him and help him complete whatever task The Dark Lord had given him, and promised Albus to ensure his death was painless and not blemishing Draco's own soul, I took out two bludgers with one swing."