bull rope
n.— «He said for years that he was at the funeral and that he photographed the boy. “I had a telephoto lens on my camera, and we were across the street behind what we called the ‘bull rope,’ that we had to stay there,” he said in an interview on CNN in 1999.» —“Known for Famous Photos, Not All of Them His” by Michael Wilson New York Times Sept. 15, 2007. (source: Double-Tongued Dictionary)