Pure-blood supremacy

"I really don't think they should let the other sort in, do you? They're just not the same, they've never been brought up to know our ways. Some of them have never even heard of Hogwarts until they get the letter, imagine. I think they should keep it in the old wizarding families."

- Draco to Harry Potter before their first year at Hogwarts

A pure-blood supremacist is normally an elitist pure-blood (and occasionally half-blood) wizard or witch who believes that those who can trace their ancestry to all-wizarding members are inherently superior to wizards or witches who have any traceable muggle descendance. They typically regard Muggle-born wizards as impure and not worthy of possessing magical ability, and often actively discriminate against them.

Attitude and beliefs
Pure-blood supremacists consider themselves to be the elite of the wizarding world, akin to royalty. They look down upon half-bloods, Muggle-borns, and half-breeds, and consider the Muggle world to be inferior to their own. Pure-bloods, and even half-bloods, who do not share this view are considered traitors to their own kind, hence the term "blood traitor". They are considered disgraces by pure-blood supremecists such as the Malfoys.

Elitist pure-bloods believe that it is a sign of weak magic to enjoy non-magical company, and seem to believe that some of the supposed dirtiness of Muggles and Muggle-borns will rub off on those who associate with them, thus they consider blood traitors to be "filthy" as well.

Some extremists consider blood traitors to be nearly as bad as the Muggle-borns they are prejudiced against. Bellatrix Lestrange, for example, claimed that "blood traitor is next to Mudblood in [her] book", and her family often disowned and blasted off the family tree any members who could be considered blood traitors. Blood traitors might also be shunned by their families and acquaintances; for example, Bellatrix and her younger sister Narcissa Malfoy stopped seeing their sister Andromeda after she married a Muggle-born wizard, Ted Tonks.

Lord Voldemort and his Death Eaters targeted blood traitors during the First and Second Wizarding Wars because they opposed their goals. When they were temporarily in control of the Ministry of Magic in late 1997 and early 1998, they kept blood traitors such as Arthur Weasley under surveillance. However, even most Death Eaters were reluctant to kill pure-bloods, even "traitorous" ones, if it could be avoided. The same situation existed at Hogwarts School of Witchcraft and Wizardry while Voldemort was in power.

Pure-blood elitism
The most extreme of the pure-blood supremacists seek to purge the world of those they consider "impure". They often tolerate half-bloods out of necessity, but muggle-borns are persecuted, and muggles are viewed as nothing more than animals.



Pure-blood bias
Some wizards, while believing in the inherent superiority of pure-bloods, do not actively discriminate against muggle-borns and are even accepting of them in some cases.

Wizarding supremacists
Many wizards, even those who oppose discrimination based on blood status, regard themselves as superior to the non-magical muggles. While many are content with simply remaining separate from muggle society, some believe that the world would be a better place with wizards in charge.