Peace activists are organizing a “flashmob” dance-in to protest the recent arrests of five people as they danced at the Jefferson Memorial in Washington, D.C. The five staged the action to protest a federal court ruling barring dancing at national memorial sites. Video footage shows police officers shoving a dancer to the ground and grabbing another by the neck. The group CodePink says it expects thousands of people to show up at the Jefferson site on Saturday to take part in a massive dance-in in protest of the arrests.