British author and “Harry Potter” creator J.K. Rowling. Photo: Reuters / Carlo Allegri.

Harry Potter author and outspoken British activist against antisemitism J.K. Rowling lashed out on Wednesday against a racist Twitter smear of famed comedian Stephen Fry.

Rowling entered a controversy that broke out after Fry, who is Jewish, defended Rachel Riley, a TV star who has criticized the UK’s Labour party over the antisemitism scandals it has been plagued by in recent years.

Far-left ex-MP George Galloway, a vehement critic of Israel, responded to Fry’s statement, “I stand with you, Rachel,” by tweeting: “Dumbfounding. She calls Chomsky (or Chomski as she styles him) an anti-Semite and slanders half the Labour Party as the same. 1980’s left-wing comedy icon and all round gent backs…her!”

In response, an account billed “Stafford 4 Jeremy Corbyn” tweeted, “Don’t forget @stephenfry make money from the potter books. Can’t have him upsetting @jk_rowling.”

Rowling shot back, writing, “Nothing says ‘our movement has no problem with antisemitism’ than suggesting a man of Jewish ancestry is secretly motivated by fear of losing money. But thanks for tagging me in, @stafford4jc. If you hadn’t, I wouldn’t have been able to tell you to go f**k yourself.”

Rowling, a longtime Labour supporter, has taken a strong stand against antisemitism in the party since Jeremy Corbyn became its leader in 2015. She has often faced considerable abuse for her stance.