Anti-social Behaviour CDC Anti-social Behaviour Report If an incident of antisocial behaviour is happening now, call the police on 101. Call 999 in an emergency. Antisocial behaviour is behaviour which causes or is likely to cause harassment, alarm or distress to other people, including behaviour that puts people in fear of crime. It often leaves victims feeling helpless, desperate and with a seriously reduced quality of life. We will investigate reports of antisocial behaviour and take them seriously.