Top Ten Worst Things About Harry Potter and the Order of the Phoenix

Sirius Black's death

Dolores Umbridge

The ignorance about Voldemort's return

Dolores Umbridge making Harry carve "I Must Not Tell Lies" into his arm

Dumbledore is forced to leave

Harry getting expelled from Hogwarts

Harry, Fred and George banned from Quidditch.

Harry having to live with the Dursleys for one last summer

Sirius wouldn't have died if Harry had used the mirror

Harry's visions

Draco and Pansy as Slytherin prefects

Hagrid being driven away from the school

Voldemort possessing Harry to attempt to get Dumbledore to kill him

Harry's angstiness

The Prophecy

Harry losing his temper

Sirius not asking Harry about the Mirror when he visited him and Remus in the

Sirius not asking Harry about the Mirror when he visited him and Remus in the Floo after Harry saw Snape's worst memory.

Marietta Edgecombe

Too mean spirited

Snape's worst memory

Umbridge was going to Crucio Harry

Percy Weasley disowning his family

Inquisitorial Squad

Tonks is introduced

Pansy Parkinson

Percy Weasley's letter

Educational decrees

Harry's dreams

Snape's teaching of Occlumency