New America Media reports that a coalition of pro-immigration groups is mobilizing to bring thousands of people to Washington, DC for a pro-immigration march on March 21st.

Amidst lofty rhetoric and ambitious logistics, immigration reform activists are planning a mass demonstration next month at the National Mall in Washington, D.C. The major forces behind the “March for America” are labor groups, immigrant advocacy organizations, and the Catholic Church.”

The march will be a test of immigrant advocates’ organizing capacity and their increasing use of technology to stoke a popular groundswell on immigration.

The march aims to pressure Capitol Hill and the White House which have shown an unwillingness to take on immigration legislation.

In a recent Spanish-language op-ed penned for America’s Voice the organization’s Hispanic media outreach director Rafael Prieto Zartha traced a kind of family tree for the origins of the planned march. These include the farm workers’ movement, the mass immigration demonstrations of 2006, and the world’s most famous civil rights speech, also delivered at the National Mall.

“The stage for our demonstration will be the area holding the nation’s monuments, where civil rights martyr Martin Luther King pronounced his unforgettable ‘I Have a Dream’ speech nearly 47 years ago, during a demonstration called ‘March for Jobs and Freedom,’” wrote Prieto.  For more on this story.