Legislation refers to the rules and regulations that govern institutions like the BBFC. The BBFC must consider whether material submitted for classification is likely to infringe criminal law. It must also consider the potential for harm to viewers or society that could result from criminal behavior, illegal drugs, violent or horrific behavior, indecent images of children, animal cruelty, obscentity, racial hatred, or human rights infringements depicted in films. Local authorities have powers over the BBFC such as granting licenses and changing film certificates.