Harry Potter: The Worst Thing Every Order Of The Phoenix Member Did

A fierce friend, a highly intelligent potion-maker, and a doting mother, Lily Potter's heart was strong that she was able to sacrifice herself for the love of infant son Harry, sparing him from Voldemort and destroying his form, stopping his reign of terror for over a decade.

That's quite the impressive resume', but Lily's power had to come from somewhere. Dig a little deeper, and you'll discover a rather cruel oversight by the matriarch of the short-lived Potter family.

Lily, it was said, would bring home tadpoles and practicing magic, much to her parent's delight. Seems innocent enough, but this strange behavior formed a divide between her and her sister, Petunia. Petunia eventually married Vernon Dursely, and it was her utter disgust for her witch sister that fostered her utter contempt for her orphaned son Harry.

As with several of these entries, there was really no harm intended in the actions of certain members of the Order. That doesn't necessarily mean that no harm was caused, however.