Did you even watch the video of what you posted? Those morons refused to comply with any of the reasonable requests made by the officer.
The reason you've never feared for your life from an officer is because you reasonably comply with officers requests when pulled over for a traffic violation.
As far as the Michael Brown shooting goes, the officer was completely justified in shooting. They keep painting a picture of Michael Brown as a child when in reality this was a 6'4" 300LB adult thug that robbed, then assaulted the poor gas station clerk, and then tried to disarm a police officer. I unapologetically have no sympathy for someone like that regardless of race.