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.

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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.

sources have informed me that that was not a full or accurate representation of their interaction. I very clearly projected my own /2 — J.K. Rowling (@jk_rowling) July 31, 2017

to that boy or his family, I apologise unreservedly. These tweets will remain, but I will delete the previous ones on the subject. /4x — J.K. Rowling (@jk_rowling) July 31, 2017