 Polish-Ukrainian relations deteriorated during the Great Depression, which led to much economic disruption, felt particularly hard in the rural areas.In this atmosphere radical Ukrainian nationalists propagating active resistance to Polish domination found a ready response from Ukrainian youth.In July 1930, activists of the Organization of Ukrainian Nationalists (OUN) began sabotage actions, during which warehouses and cereal fields owned by Poles were burned, Polish homes were destroyed, bridges were blown up, state institutions, rail lines and telephone connections were damaged.