As riots terror through the U.S. in response to apparent injustice and police treatment inequality, new legal and constitutional issues arise.  To combat the perception of misconduct, the use of police body cameras is beginning to gain tremendous traction across the country.  The concept is easy: if police record their interactions with citizens, police will be more inclined to act justly and citizens will be more inclined to treat police with respect.  That is, if both parties know their interaction is being recorded, there is less chance either will act inappropriately.  In theory at least.