Democratic presidential candidate Robert F. Kennedy Jr. said Fox News barred content that reflected negatively on vaccines to appease its big-money advertisers in the pharmaceutical industry. During a June 5 Twitter Spaces interview with the platform’s owner, Elon Musk, Kennedy disclosed that he approached former Fox News CEO Roger Ailes in 2016 about doing a story on the mercury content in vaccines but was shut down. “He said that any of his hosts who allowed me on TV to talk about this, that he would be forced to fire them,” Kennedy recalled. “And he said that 75 percent of his...