The video call that would host a parade of the Democratic Party’s most prominent officeholders began with a man in a barren room issuing this clarion call: “Welcome to Yimbychella!”
To the thousands who had tuned in, Armand Domalewski’s words required no explanation. For everyone else, what he meant was that the call was the equivalent of the hip Southern California music festival Coachella for the political movement known as Yimby—“Yes in My Backyard.”
Source: https://www.wsj.com/politics/elections/pro-housing-yimbys-for-kamala-harris-cf3cb3b8