Article Photos: Immigration debate gives life to annual rallies 2/36

FILE - In this May 1, 2012 file photo, thousands of protestors participate in a May Day rally in Los Angeles. Social media and text messaging have become indispensable organizing tools for advocates of a sweeping immigration overhaul, but street marches still have allure. Tens of thousands are expected to rally in dozens of cities from New York to Bozeman, Mont., part of an annual tradition on May 1. (AP Photo/Nick Ut, File)