https://web.archive.org/web/20170929062836/https://www.pottermore.com/features/to-spew-or-not-to-spew-hermione-granger-and-the-pitfalls-of-activism
https://web.archive.org/web/20170929062836/https://www.pottermore.com/features/to-spew-or-not-to-spew-hermione-granger-and-the-pitfalls-of-activism