/ˈrʌfiəˌnɪzəm/ – Noun
Definition: hành vi côn đồ, hành vi du đáng.
A more thorough explanation: Ruffianism refers to behavior that is characterized by violence, lawlessness, or roughness. It typically involves acts of aggression, intimidation, or criminal behavior.
Example: The defendant’s behavior at the protest displayed a clear example of ruffianism, as he engaged in violent acts and disrupted public order.