Police on Sunday arrested around 200 people who strapped themselves to the White House fence to protest the proposed Keystone XL oil pipeline.
The protesters were mostly college students who participated in a peaceful march that began at Georgetown University and ended outside the White House.
The marchers chanted “climate justice now” and carried signs such as “don’t tarnish the Earth” in their efforts to convince President Barack Obama to reject the pipeline. They say it will contribute to global warming.