Immigration reform rally in Los Angeles (30 images)

Participants wave flags and carry signs as thousands turn out for a May Day march and rally in support of immigrant rights in Los Angeles on May 1, 2010. UPI Photo/Phil McCarten

Participants wave flags and carry signs as thousands turn out for a May Day march and rally in support of immigrant rights in Los Angeles on May 1, 2010. UPI Photo/Phil McCarten

Marchers make their way north on Broadway downtown during a march and rally for federal immigration reform and protest against Arizona's controversial immigration law, in Los Angeles on May 1, 2010. Dozens of marches took place across the country. UPI/Jim Ruymen

Participants wave flags and carry signs as thousands turn out for a May Day march and rally in support of immigrant rights in Los Angeles on May 1, 2010. UPI Photo/Phil McCarten