Trouble with the Lorentz Law of Force: Response to Critics
  In a recent paper [arXiv:1205.0096], we questioned the validity of the Lorentz law of force in the presence of material media that contain electric and/or magnetic dipoles. A number of authors have criticized our methods and conclusions. This paper is an attempt at answering the critics and elaborating the relevant issues in some detail. 
Masud Mansuripur
physics.optics physics.class-ph