Here's a snip from Washington Post article about the meatspace hijinks today:
The event, complete with fake handouts on chamber letterhead, at least a couple of fake reporters, and a podium adorned with the chamber logo, broke up when a spokesman from the real chamber burst in. What followed was a spectacle not usually seen in the John Peter Zenger Room at the National Press Club: two men in business suits shouting at one another, each calling the other an impostor and demanding to see business cards.Pranksters stage Chamber of Commerce climate change event (Washington Post, via @tomzellerjr). Related coverage: GOOD, Roll Call, Talking Points Memo.
"This guy is a fake! He's lying! This is a stunt that I've never seen before," said Eric Wohlschlegel, an official at the actual Chamber of Commerce, who said he'd heard about the hoax event from a reporter who'd mistakenly shown up at the chamber's headquarters.
The fake Chamber of Commerce official, who called himself "Hingo Sembra," did not give his real name to reporters, saying only that he represented a coalition of climate activists.