of Slytherin, Snape is now an active Death Eater, answering Voldemort’s calls to strategy meetings about his campaign to seize power. He is the primary source of spy intelligence at Order of the Phoenix meetings. He tutors Harry privately in Occlumency, a magical way to seal the mind against intrusion. And he is part of the resistance to Dolores Umbridge, a bureaucrat posted to Hogwarts by the Minister of Magic to implement a totalitarian regime denying that Voldemort has returned and cracking down on anyone preparing to defend themselves against him.
