"Thousands of protesters opposed to a new oil pipeline from Canada to the United States circled the White House grounds on Sunday to press President Barack Obama to reject the project for environmental reasons.
Opponents to TransCanada Corp's Keystone XL pipeline, which would transport crude produced from oil sands, have dogged the president for months, arguing that the carbon emissions produced in the process of extracting oil from the sands would exacerbate climate change.
On Sunday thousands of men and women, many of them wearing orange vests with 'Stop the pipeline' printed on them, lined up around the White House grounds, which include the presidential mansion, the U.S. Treasury department and a sprawling executive office building."
"10,000 Pipeline Protesters Circle White House" (Hearst)
"Oil Pipeline Protesters Encircle White House" (Washington Post)
"Keystone Pipeline Debate Heats Up" (Washington Post)
"Protesters Take Pipeline Fight To White House" (NPR)