Labor Day celebration. Manaus, 1939.
May 1st. São Bernardo do Campo (SP), 1986.
“If you say May 1st , you say:
8 hours to work;
8 hours to sleep and 8 hours to enjoy and learn.”
A Razão, Rio Grande, May 1st, 1896
Workers’s demonstration. Rio de Janeiro, 1915
May 1st. Pernambuco, 1963.
Labor Day celebration. São Paulo, 1944.