From the May 1 Coalition official website:
On Saturday May 1, 2010, a diverse coalition of immigrant rights advocates, community and union leaders, artists and youth-based community organizations will gather in Union Square at midday for a rally, march and Hip Hop concert in support of immigrant and worker rights. In light of legislation passed in Arizona last week, the Union Square event will emphasize condemning this racially charged legislation that will terrorize not only immigrants but all communities of color.
The Union Square rally will also make it clear that the Schumer Plan on immigration is no better as it does not grant immediate legalization, continues to militarize the border and will ominously mean biometric identification for all people in this country. The Schumer plan also means the further criminalization of the undocumented and will serve to drive workers further underground.