Brown likely had such thoughts as he saw the wig-wag lights of Officer Harris in his rearview. Then, he probably got mad. I know I would have. You are driving along, minding your business, causing no harm to anyone. Then you glance up and see the bright lights – and the buzz-cut head – of Officer Unfriendly. This costumed menace is about to threaten you with violence and – at minimum – shove a piece of paper in your face that will demand what amounts to a ransom payment, or else. The “or else” being a jail cell. Over… nothing. A non-crime.
And so, Brown attempted to flee. It ended up costing him his life.
Mind, “officer safety” was never threatened. Brown merely tried to get away from an obnoxious costumed thug who had no business bothering him in the first place. But that was sufficient to justify summary execution by motor vehicle.