...In frantic behind-the-scenes phone calls, text messages and Slack chats, they’re also planning to channel the energy unleashed last week into electoral politics, starting with Democratic primaries, to build what one organizer called a “tea party of the left.”

“Our big goal is to support primary challenges against those Democrats who negotiate with Donald Trump,” said the organizer, Waleed Shahid, a veteran of Bernie Sanders’ campaign who is working for a group called AllofUs, launched in September. The approach mimics that of the tea party, which has used insurgent primary bids to unsettle establishment Republicans and drive the Republican Party rightward....