Elon Musk and Jack Dorsey promote Robert F. Kennedy Jr. on social media despite anti-vax controversies.

Elon Musk will host Democratic presidential candidate Robert F. Kennedy Jr. on a Twitter Spaces event titled "Reclaiming Democracy" on Monday. Kennedy Jr., a prominent anti-vaccine activist and environmentalist, has asked his followers to tweet him questions with #AskKennedy. The event will be moderated by David Sacks, Musk's longtime friend who also moderated Musk's discussion with Florida Gov. Ron DeSantis. Kennedy Jr. has hit the campaign trail this week for the first time since launching his candidacy for the Democratic presidential campaign in April.