Historically, the `匪徒` is a prominent figure in Chinese literature and folklore. From the mountain bandits (山匪, shānfěi) in classic novels like “Water Margin” (《水浒传》) who often fought against corrupt officials, to the gangsters of 1920s Shanghai, the `匪徒` occupies a space of chaotic rebellion against established order. This can be contrasted with the American “outlaw” or “gangster.” While both are criminals, the Chinese `匪徒` often carries a stronger connotation of being an external threat to a society that values harmony and stability (稳定, wěndìng). The archetype isn't just about breaking the law; it's about creating chaos (乱, luàn) and threatening the collective peace. In modern Hong Kong cinema, the term is frequently used to depict members of Triad gangs, cementing its association with organized crime.
`匪徒` is primarily used in formal or serious contexts. You will rarely hear it in casual, everyday conversation unless someone is speaking dramatically or telling a serious story.