Sen. Amy Klobuchar snarled that social-media firms should “take this crap off of their platforms that are basically telling people, ‘oh, hey, there’s problems [with the vaccine]’ when we know science proves there isn’t.” The messages are clearly coordinated.

Vaccine hesitancy is slowing America’s recovery from the pandemic. Yet Facebook released a rare rebuttal to its progressive tormentors, noting that “vaccine acceptance on the part of Facebook users in the US has increased by 10-15 percentage points” to 85%. It also says the U.K. and Canada “have similar rates of Facebook usage to the US,” yet “those countries have achieved more than 70% vaccination of eligible populations,” Mr. Biden’s July 4 goal.

Democrats are paying for having promoted vaccine skepticism in the presidential campaign last year. Then-candidate Biden warned that a rapid approval timeline could be politicized, a point echoed by some who resist the vaccine today, and Vice President Kamala Harris publicly doubted a Trump-approved vaccine. It’s no surprise that this skepticism is now playing out among some Americans when the same politicians say vaccines are safe when they’re in power.