Rowling is a death eater, supporter of Lord Voldemort by allowing Slytherin to remain active at Hogwarts.

Rating: 1/10 (12 July 2012)

Rowling ends both the book and the movie in an appalling manner! By allowing the vanquished Slytherin house with it's evil Snake crest to remain active at Hogwarts at tne end of the second Wizarding World War. Moreover, she didn't close down the death-eater's portraits which she breathed immortal life into. In the books Rowling created, the portraits themselves are sentient; able to speak as if still alive. They are also portals to other portraits and have every means available to them to re-group, re-organize and start another literary world war. Beatrix Lestrange for instance, would surely enjoy training a pack of new slytherins with her dark magic and cruel intent, with only one aim. To destroy the world of good magic, and to take over the human world by force.
In symmetry to enhance my point: I have an example from Lord of the Rings I cite King Elrond of the Elves, in LOR trilogy, whom allowed the ring to go free at the end of the first war in Middle Earth. Because of this, the ring grew power again. Sauron regrouped with more force than before, and started the second world war. Elrond made a terrible, horrible blunder. He admitted it, worked to fix it, and author Tolkein ended the ultimate literary war of good and evil with the ring being thrown into the fire. It resulted in a victory for the peaceful citizens.
Collectively the group of Death-eaters were a bunch of mass murderers who tortured their victims before killing them. The Death-eaters world domination attempts resembles another vicious group of war mongers, infamous for hurting victims and then executing them. I'm talking about the Nazi's and I'm equating the Nazi's to the death-eaters, and Hitler to Lord Voldemort. Both wanted pure-blood races to dominate, and neither cared about the cost to cultural diversity or considered the value of human life.
However, the Nazi's at the end of WW2 were vanquished of their power symbols. The swastikas were removed and destroyed. They went bankrupt . To associate with this group is to integrate into a hatred that is repugnant to everyone.
SO why did ROwling leave the Swastika (the snake of Satan) on the house crest, leave the Death Eater portraits at the school,and why did she kill Dumbledore who was a GOd FIgure of reason whom would have likely removed Slytherin house as vanquished and replaced with a new house that is more progressive. He also would have ended the war with no trace of a chance that a new world order of Slytherins could prevail. Ever again. A good author does this for the readers. Closes shop on the evil.
Instead, by allowing the Slytherins to remain powerful--she invites another mass scale War, and on loopback. With the portrait system of the Dark Lord's most loyal supporters, helping now-- the next Hitler to destroy more children like the Creevy's or Hero's like Cedric Diggory and Professor Snape.