Elon Musk is blaming the Anti-Defamation League (ADL) for a slump in US advertising revenue on X Corp., the social media platform formerly known as Twitter.Ad sales are still down 60% “primarily due to pressure on advertisers” mounted by the ADL, Musk said in a series of posts Monday. The non-profit organization has been “trying to kill” the platform since he bought it last year, by “falsely accusing” it and him of being anti-Semitic, he said, adding that legal action was one possible option if it persisted with...