社会民主党拥护帝国主义战争背叛无产阶级利益的罪恶的行为
社會民主黨擁護帝國主義戰爭背叛無產階級利益的罪惡的行為
shè huì mín zhǔ dǎng yōng hù dì guó zhǔ yì zhàn zhēng bèi pàn wú chǎn jiē jí lì yì de zuì è de xíng wéi
the criminal acts of the social-democratic parties in supporting the imperialist war and betraying the interests of the proletariat