What I get a kick out is how those who were not there and have never worn the badge/shield/star of a LEO are the most vocal about how evil, lazy, zealous, and otherwise such horrible human beings.
First, remember that hindsight is 20/20. Second, do your best to visualize a shiny object flashing around in someone's hand as it swings close to you, you first though is to "not get cut or stabbed" (trust me, I've been there). Thirdly, do not discount anyone that in "confined" to a wheelchair, crutches, or other such typical hindrance since they are accustomed to being able to move such things in manners in which those of us who don't use them or know nothing about them. Case in point: my wife (a nurse) was pinned to a wall by a wheel chair "piloted" by a pissed off elderly man, he knew how to get the leverage using the wheels and his weight, my wife had some nice bruises on her lower legs when it was all over. This guy had the LEO cornered and was swinging something shiny at him trying to do him harm. Sure, in hindsight we think he could have used a taser, or OC, or the Asp baton, or some other tool but he didnt. Now we as "the people" may need to decide if he went too far in the use of force. Until he is found guilty of that I will give the LEO the benefit of the doubt because I have walked a mile in his shoes. Those of you who have not need to shut your pie holes, sit back, and get back to pickin' your nose and eating the profound discoveries of your life quest.
The best "discussions" of this topic are that involving the Rodney King fiasco.
THAT is a fun issue to educate people on.