SAN DIEGO (AP) — Social media and text messaging have emerged as indispensable tools for advocates of a sweeping immigration overhaul, but street marches have an enduring allure.

Tens of thousands are expected to rally in dozens of cities from New York to Bozeman, Mont., on Wednesday in what has become an annual cry for easing the nation’s immigration laws. The 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.