An activist who was slated to speak at the Republican National Convention on Tuesday night was abruptly yanked off the program after it was reported she'd shared an anti-Semitic conspiracy theory on social media hours ahead of her scheduled appearance.
"Do yourself a favor and read this thread," Mary Ann Mendoza wrote on Twitter, linking to a string of tweets about a bogus 100-year-old Jewish plot to run the world that managed to add some QAnon conspiracies and touched on everything from the Titanic to Hillary Clinton.
Mendoza apologized about an hour before the RNC programming was set to begin, saying, "I retweeted a very long thread earlier without reading every post within the thread. My apologies for not paying attention to the intent of the whole message. That does not reflect my feelings or personal thoughts whatsoever."
Mendoza's removal was so abrupt that organizers had already sent out a copy of her prepared remarks which were supposed to be embargoed until her appearance.
Campaign spokesman Tim Murtaugh confirmed, "We have removed the scheduled video from the convention lineup and it will no longer run this week." No reason was given.
QAnon is baseless conspiracy theory with a variety of outlandish claims, centered around a belief that President Donald Trump is waging a secret war against a Democratic and Hollywood elite cabal of child abusers.
The FBI said last year their theories are likely to "motivate some domestic extremists" but Trump gave the group a public embrace last week, saying, "I've heard these are people who love our country." He added he didn't know much about the movement "other than I understand they like me very much, which I appreciate."
The Daily Beast first reported on Mendoza's tweet.
Mendoza was going to speak out about her son, who was killed in a collision with a drunk driver who was in the country illegally.
"President Donald Trump is the first political leader we've ever seen take on the radical Left to finally secure our border and to end illegal immigration since day one. I’ve met him many times and I know what’s in his heart," she was set to say.
Democratic group American Bridge 21st Century had called for Mendoza to be removed after the Daily Beast story was published.
"There's no place for Mary Ann Mendoza’s anti-Semitic views. Sadly, under Donald Trump's watch, anti-Semitism is on the rise and is now in the front and center at the Republican National Convention," said spokesperson Kyle Morse.
Earlier Tuesday, Georgia congressional candidate Marjorie Taylor Greene — who's voiced support for QAnon and has a history of making racist, anti-Semitic and anti-Muslim comments, tweeted that she's been invited to attend Trump's acceptance speech at the White House on Thursday. "I'm honored and thrilled," she wrote in the post, which included a copy of the invitation.
This article was originally published on NBCNews.com.