Why did the Dementors side with Voldemort?
The Dementors feed off of despair.
Death Eaters spread despair, allowing the dementors to feed on it and breed.
The Dementors take care of the Death Eaters enemies, taking their souls, and demoralizing the rest of the population.
This is why the Dementors joined Voldemort..
Who did Cho Chang marry?
Is Dolores Umbridge a Death Eater?
Despite her wickedness and pure-blood supremacy attitude, Umbridge was repeatedly stated to be no Death Eater, as she never showed support for them until they took over the Ministry in 1997.
Why did the dementors attack Harry and Dudley?
The attack in Little Whinging occurred on 2 August, 1995 after the Ministry of Magic insisted that the Return of the Dark Lord never occurred, during the summer of 1995. Wanting to discredit Harry Potter, Madam Undersecretary Dolores Umbridge ordered two Azkaban Dementors to Little Whinging in order to silence him.
What did the Dementors do to Harry on the train?
In September 1993, the Dementor was among the Dementors of Azkaban dispatched to Hogwarts by the Ministry of Magic to guard it against a possible attack by Sirius Black. Like the others, it boarded the Hogwarts Express part-way through the trip and began searching for signs of Black.
Why did Harry hear a woman screaming?
Every time Harry is confronted with a Dementor, he hears the screams of his mother as she is murdered by Lord Voldemort. … He hears this moment because Dementors feed upon happiness and cause depression and despair in anyone near them. They make people relive their worst memories.