Mudbloods and the Dangers They Pose to a Peaceful Pure-Blood Society

Mudbloods and the Dangers They Pose to a Peaceful Pure-Blood Society is a pamphlet that was printed and distributed enmasse by the Ministry of Magic while it was under Lord Voldemort's control during the height of the Second Wizarding War. It seems to have been written by Dolores Umbridge, head of the Muggle-Born Registration Commission, and contained propaganda against Muggle-borns, disparagingly referred to as "Mudbloods".

Harry Potter came across a dozen witches and wizards creating hundreds of the pamphlets when he, Ron Weasley and Hermione Granger infiltrated the Ministry in September of 1997. Harry suspected that Umbridge was the author, partly because one of the manufacturers asked a fellow employee if "the old hag" would be "interrogating Mudbloods all day".

The pamphlets were pink, with the title in gold letters. Beneath the title was a "picture of a red rose with a simpering face in the middle of its petals, being strangled by a green weed with fangs and a scowl". Evidently, this was the metaphor the Death Eater-controlled Ministry wanted to make regarding Muggle-borns being allowed into the wizarding world, which they believed should be reserved for pure-bloods.

Its dissemination was part of a larger effort to discriminate against Muggle-borns, which included requiring them to register with the Muggle-Born Registration Commission, imprisoning them in Azkaban for supposedly stealing magic, and teaching anti-Muggle and Muggle-born propaganda at Hogwarts School of Witchcraft and Wizardry, which also did not allow any Muggle-born students.