PORTLAND, OR - MARCH 25: A bird lands on Democratic presidential candidate Bernie Sanders podium as he speaks on March 25, 2016 in Portland, Oregon. Sanders spoke to a crowd of more than eleven thousand about a wide range of issues, including getting big money out of politics, his plan to make public colleges and universities tuition-free, combating climate change and ensuring universal health care. (Photo by Natalie Behring/Getty Images)
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