Cuba ? The daily routine in Cuba’s capital city will halt this morning as thousands of people converge on a plaza near the U.S. Interests Section to protest against the United States.

Cuban officials began preparing for the state-led rally on Monday by bringing buses from other cities to transport protesters, posting notices in Havana neighborhoods and setting up loudspeakers opposite the Malecon, the city’s seaside wall.

In a televised address on Sunday, President Fidel Castro called for the march to denounce the United States for its repeated meddling into Cuba’s affairs.

Castro wants to take the United States to task for what he called its failed plans to isolate and economically suffocate Cuba.

He is particularly irked that Michael Parmly, the new chief of the U.S. Interests Section, has used a recently installed electronic sign to send Cubans messages about Martin Luther King Jr. and the Universal Declaration of Human Rights.