Immigration debate gives life to annual rallies - Article Photos 9/36

A marcher carries a Mexico flag as protesters brave the cold and snow as they march from the Capitol to a park in Denver on Wednesday, May 1, 2013. About 200 people gathered at the Capitol for immigration reform. The May Day rallies carry a special sense of urgency this year, two weeks after a bipartisan group of senators introduced a bill that would bring many of the estimated 11 million living in the U.S. illegally out of the shadows. Colorado's rally comes just after the governor signed a bill allowing students in the country illegally to pay in-state tuition at state colleges and universities, ending a 10-year political battle.(AP Photo/Ed Andrieski)