The Oakland incident is not what we're talking about.
We're talking about this:
UC Davis Protestors Pepper Sprayed - YouTube
What more do you want to know than what is on the video?
Since you're from good ol' Missoura, be aware that in the State of California, using pepper spray is prohibited except in cases of self-defense.
http://lib.post.ca.gov/Publications/CrowdMgtGuidelines.pdf
Crowd Management and Civil Disobedience Guidelines
Copyright 2003 California Commission on Peace Officer Standards and Training
Published December 1998
Revised March 2003
Dispersal Order Example
“ I am (peace officer’s name and rank) a peace officer for the (name of jurisdiction). I hereby declare this to be an unlawful assembly, and in the name of the People of the State of California, command all those assembled at (specific location) to immediately disperse, which means to break up this assembly. If you do not do so, you may be arrested or subject to other police action. Other police action could include the use of force which may result in serious injury. Section 409 of the Penal Code prohibits remaining present at an unlawful assembly. If you remain in the area just described, regardless of your purpose, you will be in violation of Section 409. The following routes of dispersal are available (routes). You have (reasonable amount of time) minutes to disperse.”
* A Sampling of Methods Used to Deliver and Document Dispersal Orders:
Loud speech
Amplified sound
Display signage indicating unlawful assembly and dispersal
Gain attention of the crowd and document affirmative responses prior to declaration of unlawful assembly
Position law enforcement personnel to the rear of a crowd to confirm and document the sound of the dispersal order transmission
Acquire multiple language capability
Video/audio recording equipment for documentation
Guideline #9: Use of Force: Force Options
Agencies should develop use of force policies, procedures, and training for managing crowds and civil disobedience.
Discussion:
When dealing with crowds and civil disobedience situations, law enforcement must be a disciplined and well-organized control force. The decisions to use force and the force options that may be applied in response to these incidents range from law enforcement presence to deadly force. Peace officers need not use the least intrusive force option, but only that force which is objectively reasonable under the totality of the circumstances (Scott v. Henrich, 39 F. 3d 912, 9th Cir. 1994, and Forrester v. City of San Diego, 25 F. 3d 804 9th Cir. 1994). Graham v. Connor, 490 U.S. 386, 109 S. Ct. 1865, 104 L. Ed. 2d 443 (1989). The reasonableness of the force used to affect a particular seizure is analyzed under the Fourth Amendment and determined by balancing the nature and quality of the intrusion on the individual’s Fourth Amendment interests against the governmental interests at stake.
Prior to an event, agencies should continually review their use of force alternatives in response to potential actions by protesters. Training should reflect reasonable use of force alternatives in order that officers are prepared to consider the tactics/force options available. Chew v. Gates, 27 F. 3d 1432, 1443 (9th Cir. 1994).
* A Sampling of Use of Force Considerations:
.. Determine compliance or non-compliance of crowd
.. Physically moving non-compliant offenders
.. Anticipate possible actions of demonstrators
.. Identify criminal violations involved
.. Develop arrest protocol
.. Develop use of pain compliance protocol
.. Plan for disabled, elderly, and children demonstrators
.. Determine availability of personnel
.. Evaluate availability of other public safety resources
.. Include protection devices for involved personnel
.. Plan for the safety of bystanders
.. Evaluate mobility of suspects/protestors
.. Determine avenues of controlled departure
.. Anticipate potential for medical resources
.. Establish protocols for less lethal munitions
* A Sampling of Force Options:
.. Law enforcement presence
.. Verbalization
.. Firm grip
.. Compliance techniques
.. Control devices
..
Nonlethal chemical agents.. Electrical control devices
.. Impact weapons/batons
.. Less lethal (i.e., sting balls, grenades, bean bags)
.. Deadly force