Donald Trump has really perfected the art of Twitter, using it as a platform to peddle right-wing conspiracy theories about everything from climate change to President Obama’s birth certificate.

In a recent Twitter storm, Trump retweeted followers who attacked Fox News anchor Megyn Kelly — who faced heated attacks from the Trump campaign for her role as a moderator in the opening GOP presidential debate — as a “bimbo” and went after Jeb Bush for knowing how to “speak Mexican.”

Trump, who recently posted a video that used comments from Bush’s mother to mock the candidate and retweeted a follower who wrote that Bush “has to like the Mexican Illegals because of his wife,” also tweeted that the former governor is “ashamed” of his family:

“@YoungYoung54: @JeriHyatt @megynkelly @JebBush So true. Jeb Bush is crazy, who cares that he speaks Mexican, this is America, English !!” — Donald J. Trump (@realDonaldTrump) August 25, 2015

Jeb Bush never uses his last name on advertising, signage, materials etc. Is he ashamed of the name BUSH? A pretty sad situation. Go Jeb! — Donald J. Trump (@realDonaldTrump) August 25, 2015

Jeb Bush just talked about my border proposal to build a “fence.” It’s not a fence, Jeb, it’s a WALL, and there’s a BIG difference! — Donald J. Trump (@realDonaldTrump) August 25, 2015