With the outbreak of the Spanish Civil War, Peadar O'Donnell and then George Gilmore went to Spain on behalf of the Congress to report on proceedings, and returned enthusiastic supporters of the Spanish Republicans. Ryan was incensed at quasi-Fascist Blueshirt leader Eoin O'Duffy organising an Irish Brigade to fight alongside the Fascists, and in open letters to the papers criticised Cardinal McRory for raising funds at church collections to support Franco. The Congress started publicising the Spanish Republican cause in public meetings. This was no easy task, given the strength of pro-Franco feeling at the time, which was whipped up by sections of the Catholic Church and the Irish Independent. Pro-Republican meetings were frequently challenged, and on one occasion Ryan had to climb up a lamp-post to escape from a crowd which attacked a meeting he was addressing in York Street.