The blowback over Elon Musk’s endorsement of an antisemitic conspiracy idea on X gathered steam on Friday, as a number of main advertisers on his social media platform lower off their spending after his feedback.

Disney mentioned it was pausing spending on X, as did Lionsgate, the leisure and movie distribution firm, and Paramount International, the media big that owns CBS. Apple, which spends tens of hundreds of thousands of {dollars} a yr on X, additionally suspended promoting on the platform, an individual with information of the scenario mentioned. They adopted IBM, which lower its spending with X on Thursday.

Mr. Musk, who purchased Twitter final yr and renamed it X, has been below scrutiny for months for permitting and even stoking antisemitic abuse on the location. That snowballed on Wednesday when the tech billionaire agreed with a submit on X that accused Jewish people who find themselves dealing with antisemitism amid the Israel-Hamas struggle of pushing the “actual form of dialectical hatred towards whites that they declare to need folks to cease utilizing towards them” and supporting the immigration of “hordes of minorities.”

“You will have mentioned the precise fact,” Mr. Musk replied.

Jewish teams have in contrast the assertion within the authentic submit to a perception often known as alternative idea, a conspiracy idea that posits that nonwhite immigrants, organized by Jews, intend to interchange the white race. That concept fueled Robert Bowers, who raged towards Jewish folks on-line earlier than killing 11 worshipers on the Tree of Life synagogue in Pittsburgh in 2018.

On Friday, the White Home condemned Mr. Musk, 52, for enhancing the anti-Jewish conspiracy idea. Andrew Bates, a White Home spokesman, mentioned in an announcement that it was “unacceptable to repeat the hideous lie behind essentially the most deadly act of antisemitism in American historical past at any time, not to mention one month after the deadliest day for the Jewish folks because the Holocaust.”

An X spokesman declined to touch upon the promoting pauses, and Apple didn’t reply. Axios reported earlier on Apple’s determination, and Bloomberg reported earlier on the Lionsgate suspension.

Linda Yaccarino, X’s chief government, posted on the location on Thursday that the corporate had been “extraordinarily clear about our efforts to fight antisemitism and discrimination.” However on Friday, Mr. Musk agreed with a submit on X that prompt advertisers like IBM had been pulling again from the platform to save lots of face.

He later mentioned accounts that made “clear requires excessive violence” can be suspended, highlighting two phrases related to Palestinian supporters that may not be tolerated on the location.

Advertisers have been skittish about X since Mr. Musk purchased the social media service final fall and mentioned he needed extra free speech and would loosen content material moderation guidelines. That meant the platform might theoretically place manufacturers’ adverts subsequent to posts with offensive or hateful speech.

Many corporations, together with Common Motors and Volkswagen, have balked at numerous factors over the previous yr at having their promotions seem alongside a closely documented surge in hate speech, misinformation and overseas propaganda on X. In April, Mr. Musk mentioned almost all advertisers had returned, with out indicating whether or not they had been spending on the identical ranges; he later famous that advert income had fallen 50 %.

Mr. Musk additionally swung from threatening any advertisers that dared to pause their spending with a “thermonuclear identify & disgrace” to wooing them by selecting Ms. Yaccarino, a former prime advert government at NBCUniversal, to interchange him as chief government. He picked public fights with main spenders like Apple and churned via gross sales executives given the duty of sustaining relationships within the promoting trade. Prime promoting corporations, corresponding to IPG, urged their purchasers to step again from X.

Promoting had lengthy been about 90 % of Twitter’s income earlier than Mr. Musk purchased the corporate. Final month, X advised staff that the corporate was valued at $19 billion. That was down from the $44 billion that Mr. Musk paid.

The heightened sensitivity round antisemitism, Mr. Musk’s penchant for public squabbling and basic fatigue after months of fuss over X left many promoting professionals hesitant to weigh in on Friday.

“Shoppers have at all times needed to make choices about content material they may or is not going to be related to,” Renee Miller, the founding father of the Miller Group promoting company in Los Angeles, mentioned in an e-mail. “We usually counsel our purchasers to not take an overtly public political stand.”

IBM, which lower off about $1 million in promoting spending that it had dedicated to X for the remainder of the yr, mentioned on Thursday that it had “zero tolerance for hate speech and discrimination.” The tech firm acted after a report this week from Media Issues for America, a left-wing advocacy group, which mentioned adverts from corporations together with Apple and IBM had been showing on X subsequent to posts supporting white nationalism and Nazism.

Mr. Musk posted late Thursday that “Media Issues is an evil group.”

Angelo Carusone, president and chief government of Media Issues, mentioned Mr. Musk’s “calling us evil” for stating what was on X was “not dissimilar from any right-wing account who we spotlight.”

He added that X was “not simply going to only lose cash with Apple, but in addition the cornerstone of their technique to woo again advertisers.”

Kate Conger contributed reporting.