Dementors and Tormentors

As in Harry Potter: "Dementors are among the foulest creatures that walk this earth. They infest the darkest, filthiest places, they glory in decay and despair, they drain peace, hope, and happiness out of the air around them... Get too near a Dementor and every good feeling, every happy memory will be sucked out of you. If it can, the Dementor will feed on you long enough to reduce you to something like itself...soulless and evil. You will be left with nothing but the worst experiences of your life."

—Remus Lupin to Harry Potter



In any organization, some people are dangerous--

"Of course they won't let go. They are enjoying it.

"There are vicious pitbulls that attack little dogs even after the little dogs show submission, unlike normal dogs. There are coaches who want to humiliate their opponents, such as Red Auerbach's smoking a cigar in sign of victory in the 3rd quarter.  There are murderers who will stab their victims dozens or hundreds of times even after their victim stopped breathing.

"They might just be getting started. I'm telling you this not to scare you, but so you can prepare yourself mentally and withstand even worse stuff that might be coming."

Keep in mind that some people are Dementors and Tormentors (a term invented by the above speaker).