Sen. Bernie Sanders makes surprise appearance at Coachella

Sen. Bernie Sanders made a surprise appearance onstage at the Coachella music festival in Indio, California, Saturday night, encouraging younger generations to "stand up to fight for justice."

Sanders, the longest-serving independent member of Congress, said the U.S. "faces some very difficult challenges," while urging the crowd at the popular music festival that "the future of what happens to America is dependent upon your generation."

"Now you can turn away and you can ignore what goes on, but if you do that, you do it at your own peril," Sanders continued. "We need you to stand up to fight for justice. To fight for economic justice, social justice and racial justice."