So another guy has been shot by police in the US - his colour to me is irrelevant, what is relevant is this; why did they shoot this man at point blank range when his wife begged them not to and reassured them that he was harmless to them. More important even than this; if they really did believe he was armed was it necessary to shoot more than once? Wouldn't once have rendered the victim helpless? Wasn't this enough? I heard 3 or 4 shots - hard to tell with the echo but 3 at least - why? They wonder why there is outrage and protests - sheesh....
I am not sure what the scenario is that happened. I can answer some of your questions though.
1) It doesn't matter what the wife says. Many people will deny a close family member or friend was capable of many crimes, but later find out that the person really did do something. There could be something going on that the wife doesn't know about and the guy could still be a threat to them, even though she doesn't think so.
2) One gunshot does not render a person helpless like you see in movies. Many people don't even realize they are shot in the leg or arm and keep using it. Police are trained to neutralize a threat. They shoot until their is no longer a threat. One gun shot even to the heart is not an instant kill in most cases, the person still has so many seconds left of oxygen getting to the brain. The person can still move too. Once there is no longer a threat, typically they go up and still make sure there is no threat, then see if they can help the person while waiting for medical help.
The outrage is typically caused by people not understanding how and why police react in certain situations.
There was a case a long time ago where a person was pulled over. They disobeyed the cop and started dancing around in the street. The cop stood back trying to use voice commands to get the guy to listen, but eventually the guy just stopped dancing, walked to his truck, grabbed a gun, and shot the police officer. He then drove off, leaving the officer lying there. Somehow that officer survived.