Nathalie

“Voldemort himself created his worst enemy, just as tyrants everywhere do! Have you any idea how much tyrants fear the people they oppress? All of them realize that, one day, amongst their many victims, there is sure to be one who rises against them and strikes back!”
― J.K. Rowling, Harry Potter and the Half-Blood Prince

“The Death Eaters can't all be pure-blood, there aren't enough pure-blood wizards left," said Hermione stubbornly. "I expect most of them are half-bloods pretending to be pure. It's only Muggle-borns they hate, they'd be quite happy to let you and Ron join up"
"There is no way they'd let me be a Death Eater!" said Ron indignantly...."My whole family are blood traitors! That's as bad as Muggle-borns to Death Eaters!"
"And they'd love to have me," said Harry sarcastically. "We'd be best pals if they didn't keep trying to do me in.”
― J.K. Rowling, Harry Potter and the Half-Blood Prince