What I do not understand is why police do not have a certification like Lawyers or Doctors do. If they really mess up they should lose that certification (just

What I do not understand is why police do not have a certification like Lawyers or Doctors do. If they really mess up they should lose that certification (just like a lawyer or doctor can) and then they can no longer work as a police officer. No moving a town or state over and continuing onward - license revoked.