Dado Ruvic/Reuters/Illustration Chinese internet company Bytedance, which owns the popular short-form video app TikTok, accused Facebook of plagiarism and smears following criticism from Facebook CEO Mark Zuckerberg. "ByteDance has always been committed to becoming a global company. During this process, we have faced all kinds of complex and unimaginable difficulties, including the tense international political environment, collision and conflict of different cultures and plagiarism and smears from competitor Facebook," it said. Last year, Zuckerberg accused the Chinese-owned app of censoring political protest.