I have blown up the photograph of this man to aid in identification. If you know the identity of this man, please contact the Ventura County Sheriff's Department.
Per American Power:
This image provided by the Ventura County Sheriff's Department shows the beginning of an altercation between William Rice, at right in the khaki shirt and olive shorts, and an unidentified man wearing black, who authorities say bit off Rice's little finger. The sheriff's department is seeking the public's help in identifying the man in black at far right, by calling the investigations bureau at (805)494-8201.