Rallies unfold in cities across the U.S. against Mexico 's new constitution . U.S. Rep. Luis Gutierrez , D - Texas , was arrested during a rally in Washington . Gutierrez and others were protesting outside the White House on Saturday . About 1,000 people gathered in New York City 's Union Square on Saturday afternoon .
Rallies unfold in cities across the U.S. against Arizona 's new immigration . U.S. Rep. Luis Gutierrez , D-Illinois , was arrested during a rally in Washington . Gutierrez and others were protesting outside the White House on Saturday . About 1,000 people gathered in New York City 's Union Square on Saturday afternoon .