The 'Harry Potter' author was writing in response to an article by Iain Macwhirter in which in which he claimed "every trace of ethnic nationalism was expunged from the party in the 1970s".
Rowling immediately took issue with the statement.
Macwhiter expanded upon his original point.
.@jk_rowling There was a movement called Seed of the Gael which was expelled from SNP in 70s. Zero tolerance of anti English racism in SNP.— Iain Macwhirter (@iainmacwhirter) June 18, 2015
With Rowling questioning how this one assertion could ensure there was not "any trace" of anti-English sentiment in the party today.
.@iainmacwhirter And on that you base your claim that there is not a trace of anti-English prejudice in the SNP?— J.K. Rowling (@jk_rowling) June 18, 2015
The conversation provoked a spirited response.
But Rowling defended her remarks.
.@Benitorae If asking questions politely is nasty and aggressive, I don't know what you'd call some of the people in my timeline right now!— J.K. Rowling (@jk_rowling) June 18, 2015
Rowling - born in England - often clashes on Twitter over the issue of Scotland where she currently lives.
The Labour supporter faced a torrent of abuse after the party's disastrous defeat in the General Election.
In the last hour I've been invited to relocate to France, Ireland and Brazil!— J.K. Rowling (@jk_rowling) May 8, 2015
Let's never forget that J K Rowling is in fact a fuckin shit writer and "adults who enjoy her books" is best available proof u r a cunt.— Davie Nish (@wee_Davie_Nish) May 8, 2015