It is safe to say J.K. Rowling is one of the most outspoken, dedicated voices on Twitter, tirelessly fighting bigotry & discrimination.

SEE ALSO: Trump bars transgender people from military, calls them a "disruption"

But the Harry Potter writer is not completely shielded from making mistakes, as exemplified by her most recent Twitter storm.

On Friday, Rowling picked up a video that appeared to show Donald Trump ignoring a child in a wheelchair before leaving a White House function.

'When someone shows you who they are, believe them.' - Maya Angelou https://t.co/Op6HUrRo80 — J.K. Rowling (@jk_rowling) July 28, 2017

The video was originally tweeted by Ansel Herz, the deputy communications director for Democratic Rep. Pramila Jayapal.

In a series of tweets, J.K. Rowling called the president a "monster of narcissism", recalling the incident when Trump imitated a reporter with a disability:

Trump imitated a disabled reporter. Now he pretends not to see a child in a wheelchair, as though frightened he might catch his condition. — J.K. Rowling (@jk_rowling) July 28, 2017

My mother used a wheelchair. I witnessed people uncomfortable around her disability, but if they had a shred of decency they got over it. 1/ — J.K. Rowling (@jk_rowling) July 28, 2017

That man occupies the most powerful office in the free world and his daily outrages against civilised norms are having a corrosive effect /3 — J.K. Rowling (@jk_rowling) July 28, 2017

How stunning, and how horrible, that Trump cannot bring himself to shake the hand of a small boy who only wanted to touch the President. /4x — J.K. Rowling (@jk_rowling) July 28, 2017

Among the people who retweeted Rowling's tirade was Chelsea Clinton.

However, an extended version of the clip showed Trump leaning down towards the kid and speaking to him:

.@Ansel misleading followers.

Found full video, Pres. Trump spent more time with this little boy than with anyone else

CC: @KellyannePolls pic.twitter.com/iItnJsCO2a



— The Reagan Battalion (@ReaganBattalion) July 28, 2017

Herz subsequently deleted the video and apologised in a follow-up tweet:

Deleted an earlier tweet because it turned out to be missing some context. Apologies. — Ansel Herz (@Ansel) July 29, 2017

People started calling for Rowling to correct the tweets:

Very poor of @jk_rowling not to have admitted her error. Trump's many flaws don't justify untruthful attacks https://t.co/eaa1p4Ikr9 — Tim Montgomerie ن (@montie) July 30, 2017

This is re: @JK_Rowling's tweets wrongly claiming Trump ignored a wheelchair-bound child. Clinton had been criticized for RTing Rowling https://t.co/YVk8HsBXFx — Brian Stelter (@brianstelter) July 30, 2017

Piers Morgan, who has a long-running feud with the writer, also weighed in the controversy, even forcing Chelsea Clinton to partially apologise for her retweet:

JK Rowling's 8 abusive tweets remain up, 48hrs after they were proven to be based on a lie. https://t.co/SU4XLEtNWO — Piers Morgan (@piersmorgan) July 30, 2017

Hello Piers-I hadn't seen the full video until now. I removed the retweet. And, the President should have shaken the boy's hand at the end. — Chelsea Clinton (@ChelseaClinton) July 30, 2017

However, Rowling herself still has to rectify her inaccurate tweets on social media.

A PR representative for Rowling told Mashable the writer "doesn't have a comment at this time", and refused to comment on her behalf regarding her Twitter account.

In the most recent update, a woman who claims to be the child's mother took to Facebook to say Trump didn't ignore her son:

You R spewing hatred & lies! I've been to the White House with this family and was there that day! You are a liar! Monty's mother's msg to u pic.twitter.com/ped3GAz8FK — Melissa Ackison (@melissa_ackison) July 30, 2017

The woman, named Marjorie Kelly Weer later disabled her account but Jonathan Bubar , who had previously posted that Marjorie is her cousin , confirmed to Storyful that she wrote the post that is being spread around.

UPDATE 2:26 p.m. PT: Rowling posted an apology for the tweets and said she would delete "previous ones on the subject" that were inaccurate.