Hipólito Yrigoyen

Juan Hipólito del Sagrado Corazón de Jesús Yrigoyen was an Argentine politician of the Radical Civic Union and two-time President of Argentina, who served his first term from 1916 to 1922 and his second term from 1928 to 1930. He was the first president elected democratically by means of the secret and mandatory male suffrage established by the Sáenz Peña Law of 1912. His activism was the prime impetus behind the passage of that law in Argentina.

Known as "the father of the poor", Yrigoyen presided over a rise in the standard of living of Argentina's working class together with the passage of a number of progressive social reforms, including improvements in factory conditions, regulation of working hours, compulsory pensions, and the introduction of a universally accessible public education system.

Source: Wikipedia