This video was found on YouTube, uploaded by Geordy Ford, with the only detail listed as "This was filmed by a friend earlier today." (Dated September 3, 2013)
Reading the comments, they listed a phone number to call and complain, using Google search, it appears to be the City Of Long Beach, CA. general information number (562) 570-7260.
One person in the comments says "The police told me he was high on PCP and wouldn't follow orders."
At one point in the video there are more than six cops standing there while the police brutality occurs. Tasing the man while he is on his back on the ground, beating him brutally with a billy club while it was obvious the man was no danger to them anymore if he was at all to begin with.