The head of the Anti-Defamation League says Elon Musk's behavior is 'dangerous and deeply irresponsible' after he threatened to sue the non-profit

• The CEO of the Anti-Defamation League has called Elon Musk's behavior "deeply irresponsible." 
• Musk said the ADL falsely accused him of being "antisemitic" and supported anti-ADL posts on X. 
• ADL's chief said Musk spent the weekend engaging with an "antisemitic campaign on his platform."

The CEO of the Anti-Defamation League called out Elon Musk after the X owner threatened to sue the organization, claiming it had accused him of being antisemitic.