Today in the United States, under the Democratic administration of Barack Obama, xenophobic and racist violence is escalating. The criminal agents of the Border Patrol have reached the point of killing in cold blood, before the eyes of hundreds of witnesses. On May 28, construction worker Anastasio Hernández Rojas was beaten to death by some 20 agents of the U.S. Border Patrol. Then on June 7 in Ciudad Juárez, across the river from El Paso, Border Patrol agents fired into a group of youths on the Mexican side of of the border, murdering 14-year-old Adrián Hernández with a shot to the head. These crimes are part of a policy of racist repression looking for scapegoats, typified by the legalization of xeonophobia and police use of racial profiling in Arizona’s SB 1070 law. But while Obama criticize the law, “Obama, listen, we are in the struggle,” his thugs are killing on the border. It is an illusion to think that the commander in chief of U.S. imperialism, or his counterpart and semi-colonial underling, Mexican president Felipe Calderón, will defend the workers. It is necessary to mobilize the power of the working class to defend immigrants.