Michael Roberts, in "Sri Lanka Journal of Social Science", describes three groups within early nationalism in British Ceylon. The most prominent group, "ultra-moderate constitutionalists", with culture and value system significantly westernised, whose main goal was greater participation in government; the second group, "mild-radicals", represented by leaders like Pinto, was a labour movement with political radicalism and interest in more radical trade unions; the third group, "religio-cultural revitalists", traditional values Sinhalese Buddhists "which expressed militant objection to changes produced by Western penetration." Roberts wrote all three groups interacted with the others and had indigenous, Indian, and Burgher people among members, in a complex social tapestry whose members also changed group affiliations over time. A strike at the largest publisher in Colombo, influenced by Pinto's propaganda, took place in September 1893. The next day, Pinto became president of the newly formed printers union. "The main grievances of the printers included low pay and bad working and living conditions."