The document is a training bulletin from the Oakland Police Department outlining their crowd control and management policy. The policy aims to (1) protect life, property, and vital facilities; (2) maintain public peace and order; and (3) uphold constitutional rights while relying on minimal use of force. It defines crowd management and crowd control techniques and outlines general principles like planning, deployment, policing crowds, and responses to planned and spontaneous crowd situations. The policy stresses communication, de-escalation, and protecting constitutional rights.