Tensions are high around Scotland's upcoming vote on independence from Britain, which will take place on September 18.

And if you had any doubts, have a look at this tweet by registered Scottish charity The Dignity Project, which provides aid for vulnerable children and orphans in Africa.

Taking a shot at Harry Potter author and Edinburgh resident JK Rowling for a £1 million donation to an anti-independence campaign, the tweet comes off as far from charitable.

What a #bitch after we gave her shelter in our city when she was a single mum. http://t.co/6hYglHV2sk

— The Dignity Project (@DignityProject) June 11, 2014