Open this photo in gallery: An "X" sign sits atop the social media platform's headquarters, in San Francisco, on July 28, 2023.Noah Berger/The Associated Press Advertisers are fleeing social media platform X over concerns about their ads showing up next to pro-Nazi content and hate speech on the site in general, with billionaire owner Elon Musk inflaming tensions with his own posts endorsing an antisemitic conspiracy theory. IBM, NBCUniversal and its parent company Comcast said this week that they stopped advertising on X after a report said their ads were appearing alongside material praising Nazis – a fresh setback as...