Very difficult to watch this video.  And in Eugene, how sad......and all because the individual had over an ounce of marijuana?  You have to be kidding?  Our police department needs an inservice from the volunteers who provide security at the Oregon Country Fair.  They at least are able to manage these situations without guns, tasers, or making needless arrests.  And all in the midst of huge crowds.  We need to be informed by the seminal work of Phillip Zimbardo, Ph.D. and the Prison Study at Stanford!