When using deadly force you intend to kill.  Most police are not snipers or trained to shoot to disarm disable, etc.  If you pull the trigger you intend to kill.  Period.    There are options and plenty of tools to gain complaince that can be used depending on the situation, but those come before choosing the option to pull the trigger on a PDW.  Videos don't often show everything and can be screwed by masters of the keyboard.  If you don't do the job and are not trained to do the job, then STFU.