RFK Jr.'s anti-vaccine stance divides Democrats and gains support from Silicon Valley.

Democrats supporting President Biden are attacking presidential challenger Robert F. Kennedy Jr. amid online drama between him, podcast host Joe Rogan, Twitter owner Elon Musk, and Baylor College of Medicine tropical medicine dean Dr. Peter Hotez. Several Biden-linked accounts on Twitter have been unloading on Kennedy, even going after his heroin addiction and possession felony. Kennedy appeared on Rogan’s podcast last week, prompting a response from Hotez that ignited an online firestorm between the foursome of prominent Americans and a challenge for Hotez to debate Kennedy on vaccines.