The above video shows what happens when officers don't use enough force in the onset of a subject resisting arrest. There are many reasons why the officers didn't drop elbows or punches or knees onto the suspect when he started resisting being handcuffed, but the lack of force used had a heavy hand in the fact the subject was able to disarm an officer of his fully active taser and then nearly incapacitate him with it after a short chase. The answer is more direct force used for a specific purpose, more of that and less of situations being setup where they need to be shot.