Forget Harry Potter — J.K. Rowling’s true literary legacy might just be the work of art known as her Twitter feed.

This weekend, the brash British author let loose a 14-part Twitter thread about misogyny online, capped off with what may be one of her best one-liners yet: “Femaleness is not a design flaw.”

I’m sick of ‘liberal’ men whose mask slips every time a woman displeases them, who reach immediately for crude and humiliating words 3/14

— J.K. Rowling (@jk_rowling) June 9, 2017

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Rowling’s corrective to growing anti-woman sentiment on the internet came after she decided to unfollow a man whom she had thought was smart and funny on Twitter until she saw him using sexist language toward British Prime Minister Theresa May.

"If you can't disagree with a woman without reaching for all those filthy old insults, screw you and your politics," she wrote.

"I'm sick of 'liberal' men whose mask slips every time a woman displeases them, who reach immediately for crude and humiliating words associated with femaleness, act like old-school misogynists and then preen themselves as though they've been brave."

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Rowling has been critical of May and her politics, but was quick to defend the right of all women to express opinions without being harassed by men.

Women in politics are uniquely vulnerable to the dangers of misogyny, a study released last year found. More than 80% of the female politicians interviewed by researched claimed to have experienced psychological violence during their political career, and more than a fifth reported that they had been subject to one or more acts of sexual violence.

The study was conducted by the Inter-Parliamentary Union (IPU) and included responses from 55 female lawmakers across 39 countries and five regions of the world, showing how widespread misogyny remains when it comes to women in politics.

Rowling did her part this weekend to try and stop online behavior that can lead to in-real-life violence, and her fans, for one, appreciated it:

Every woman I know who has dared express an opinion publically has endured this kind of abuse at least once, 8/14

— J.K. Rowling (@jk_rowling) June 9, 2017

Her rant — like so many epic Rowling works — was met with applause from her followers.

THANK YOU. Really disappointing throughout this campaign to see so many Mr. Left Wings I liked being really sexist and awful.

— Rosianna Halse Rojas (@papertimelady) June 9, 2017

Ms. Rowling you are awesome! I am glad you are out there fighting the good fight for women & girls everywhere!

— Catherine Smith (@CathSmith17) June 10, 2017