 In May 1937, Đujić gave a sermon in which he accused the Yugoslav government of being responsible for the poor working conditions of railroad workers in Dalmatia and western Bosnia.In particular, he criticised Niko Novaković-Longo, a deputy from Knin and minister without portfolio in Milan Stojadinović's government.In mid-May, Đujić led a massive strike between Bihać and Knin in which more than 10,000 disenchanted railroad workers participated.