It's not all about being racists. It's about abusing an extraordinary power granted to them. It's about knowing the law and abiding by the oath they swore. It's about lying to the citizenry to trick them into giving up their rights. It's about simply being truthful with the public. Hill gave his license and registration. The cop gave an unlawful command to roll down his window. The cop violated his 4th amendment by opening his car door and dragging him out the car. The cop was unprofessional in manner in which he cursed at Hill. Most police actually know that law but some of them use intimidation to force people to give up their rights.