While the message from Atlanta following former Labor Secretary Tom Perez’s ascension to chairman of the Democratic National Committee was one of unity, some progressives didn’t quite get the memo.

Minnesota Rep. Keith Ellison was the progressive favorite, but failed to generate enough support to beat Perez on the second ballot. A small group of Ellison backers booed vociferously in the wake of the results being announced, according to reports from the scene, and many progressives reacted with outrage at the vote.