Albus Dumbledore first appears on the scene as an interesting old man with a hat. In the 'Harry Potter' series by J.K. Rowling, however, he is often seen as a figure who seeks to guide and help make things come right--representation of wisdom and goodness. And, inevitably, he is not perfect: there have been questionable moments in his conduct — what he decided about Harry's upbringing, what he has kept secret in the name of helping make the greater good. You might call them all sticking points.
Yet to view him as 'bad' represents a punishment too severe. He has all the complexity of character, showing us that even heroes can have flaws. Is Albus Dumbledore a good or a bad person? This questions has got a lot of play. Well, for what it's worth, my opinion differs from those who now consider the thing settled.