Like a sleep-deprived European critic at the Cannes Film Festival, Rep. Rashida Tlaib let ‘er rip with a hearty “boo!” aimed at former Secretary of State Hillary Clinton during a rally for Senator Bernie Sanders in Clive, Iowa.

The congresswoman from Michigan appeared on a panel alongside Rep. Pramila Jayapal and her fellow so-called “squad” member Rep. Ilhan Omar during Sanders’s “Caucus Concert.” Discussion moderator Dionna Langford (an Iowa-based activist and youngest member of the Des Moines Public School board) brought up Secretary Clinton’s recent suggestion made in The Hollywood Reporter that “nobody likes Bernie Sanders.”

Before Langford was able to finish her point, a few people in the crowd jeered, prompting her to say “we’re not gonna’ boo, we’re classy.” Tlaib, chuckling, took that as her cue to gainsay Langford’s position.

“You all know, I can’t be quiet,” she said, as Jayapal and Omar doubled over in laughter.

This is, depending on your point of view, either an instance of fair game, light ribbing during the heat of an important campaign or a point-of-no-return rift in a party unable to find common ground between the legacy members of its mainstream center and its increasingly irritated left wing.

Luckily, the Internet was there with a magnifying glass, eager to sizzle the ants of discord.

There were those who felt Tlaib’s actions against her party's most recent presidential nominee were unseemly and coarse.

And there were those who criticized the critics.

Comedian/actor Rob Delaney took the opportunity to announce his contribution to Tlaib’s reelection campaign.

Saturday morning, however, Tlaib expressed regret for her actions in a four-part Twitter thread calling for party unity. “I allowed my disappointment with Secretary Clinton's latest comments about Senator Sanders and his supporters get the best of me,” she said.