J.K. Rowling, author of the acclaimed "Harry Potter" series, has once again expressed her dislike of President Donald Trump via Twitter.

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Rowling has previously used Twitter to share her negative views towards Trump’s leadership and his proposed policies. The latest installment of tweets comes as a reply to Trump’s comments about London Mayor Sadiq Khan. After the Saturday terror attack in England, in which three men ran over pedestrians on the London Bridge and stabbed several of them, Khan issued a statement: "Londoners will see an increased police presence today and over the course of the next few days. There's no reason to be alarmed."

Rowling's Sunday Twitter spree towards Trump began when she quoted his tweet criticizing Mayor Khan. 

She later retweeted several tweets criticizing Trump's response to the attacks. 

Ariana Grande's benefit concert for the victims of the Manchester terror attack gernered much online support, including support from Rowling when she retweeted a link to a story by NBC First Read. 

In the culmination of her tweets and retweets against him, Rowling tweeted an official statement criticizing Trump's social media response to the London attacks Monday. 

This is not the first time Rowling has utilized Twitter as a platform to denounce Trump. During his presidential campaign, Rowling would tweet her opinions towards his proposed policies in October, as well as argue with users who criticized her for being so open about her political opinions. After Trump was elected as president, Rowling was particularly active on Twitter, replying to those who had doubts about the future.

In January, Rowling has also tweeted about Trump's claims that the media is against him. His claims that media outlets such as CNN and the New York Times are biased led to his normalization of the term "fake news." Trump's usage of "fake news" has spurred responses from media outlets as well as regular Twitter users.  

The author has even occasionally addressed parallels that hypothetically place Trump in the wizarding world of the "Harry Potter" series. She has also gotten into arguments with some of her fans when they questioned her place in Twitter's political environment. Despite Rowling's status as a British citizen, her Twitter contains tweets and retweets concerning foreign affairs as well as national affairs.

Rowling has used Twitter many times to directly tweet her dislike of Donald Trump as a person and as a leader, but her retweets also indirectly show her position against him. In June 2016, the mass shooting on Pulse Nightclub,  in Orlando, Florida occurred. Through Rowling's tweets and retweets, she communicates her support of Mayor Sadiq Khan and simultaneously criticizes Trump. 

READ MORE: English Twitter Reacts to Trump's Comments on London Mayor Sadiq Khan