Along with Vaman Sardesai and Libia Lobo, he ran an underground radio station, Voice of Freedom, that transmitted across Portuguese Goa from 1955 to 1961, advocating the cause of the Goan independence movement.

[2] In June 1957, Menezes was part of a delegation of 11 Goans chosen for consultation by then Prime Minister of India, Jawaharlal Nehru.

Others included his brother Armando Menezes, along with Luis Gracias, J. N. Heredia, Peter Alvares, Evágrio Jorge, Vishwanath Lawande, Rama Hegde, Gerald Pereira, Pundalik Gaitonde and Purushottam Kakodkar.

[2] In 1954–55, the Portuguese attacked and killed several Satyagrahis who had forcefully but peacefully crossed the Goan borders, demanding the end of colonial rule in Goa.

India then closed its borders with Goa and imposed an economic blockade, thus reducing free movement and trade.