Legal observers are individuals, usually representatives of civilian human rights agencies, who attend public demonstrations, protests and other activities where there is a potential for conflict between the public or activists and the police, security guards or other law enforcement personnel. The purpose of legal observers is to monitor, record and report on any unlawful or improper behaviour. Legal or human rights observers act as an independent third party within a conflictual civil protest context, observing police behaviour in order to keep police accountable for their actions. Legal observers can write incident reports describing police violence and misbehaviour and compile reports after the event. The use of video and still cameras, incident reports and audio recorders is common.