Thousands of protesters in cities across the United States waved American flags as they rallied Saturday against Arizona's tough new immigration law and pushed for national immigration reform.

"Si se puede," "Yes we can" and "Boycott Arizona" were common refrains for groups protesting from Los Angeles, California, to New York City.

May 1 is traditionally a rallying day for supporters of immigration reform. But protesters across the country said they were galvanized by Arizona's recent passage of a law cracking down on illegal immigration.

The new Arizona law requires immigrants to carry their alien registration documents at all times and requires police to question people if there is reason to suspect they are in the United States illegally. Critics say it will lead to discrimination and racial profiling.

But Arizona Gov. Jan Brewer has said the law is necessary because the federal government has failed to enforce border security with Mexico, allowing hundreds of thousands of illegal immigrants to move into the state. She said changes to the law she approved Friday, which clarify that police could only stop suspected illegal immigrants while enforcing some other law or ordinance, should eliminate concerns about racial profiling. from cnn that is really bad for everyone who are foreigners.

we as latinos we are going to be disriminated because we are latinos i think that is unfair and it is very dangerous because there are people that are very discriminative and they could call the police just to get us out of ther¿ir coountrie that is REALLY REALLY UNFAIR to us the FOREIGNERS.