Vine
The singalong included Democrats Nancy Pelosi, Harry Reid, and Carl Levin. They were joined by Republicans John Boehner and Mitch McConnell. It took place when members of Congress gathered to celebrate the 50th anniversary of The Civil Rights Act of 1964 and a group sang "We Shall Overcome." It was basically the political version of people swaying at a Phish concert.
Based on a Vine posted by NBC News producer Frank Thorp V, the group looked quite awkward. Levin seemed to be especially disturbed to find himself swaying alongside his colleagues.
Watch the Vine below.