Anti-social behaviour covers a wide range of unacceptable activity that may cause harm to an individual, to their community or to their environment. This could be an action by someone else that leaves you feeling alarmed, harassed or distressed and impacts your quality of life.
Anti-social behaviour might include, amongst other things:
Violence or threats of violence
Hate behaviour that targets members of identified groups because of their perceived differences eg race,m religion, political affiliation, disabilities or sexual orientation