Clinton wriggled her arms to the song, and her politician buddies joined in. She then embraced Sen. Debbie Stabenow (D., Mich.) on one side and Sen. Jeanne Shaheen (D., N.H.) on the other, and the line of politicians swayed to the uplifting beat. Clinton exited triumphantly, singing her fight song while pumping her fist.
Wriggled her arms? Did the writer mean "jiggled"?
I watched the video. It's being generous to say they swayed to the beat. Half of them couldn't figure out the beat and the rest were trying not to sprain an ankle. It was like the dancing hippos of "Fantasia," without the whimsy.