While this is true, you ignore the fact that a wrongful death suit only attributes a civil liability and not criminal. In fact, only the robbers could be charged with homicide even if the victims were only shot by police because it would be a foreseeable result of the commission of a felony.

I don't intend to tread into the minefield (no pun intended) of the moral complexities of collateral damage, but just wanted to point out that the US justice system does recognize a difference in responsibilities.

The new stereoscopic (3D) projection systems actually use circular polarization, in which the waves travel both horizontally and vertically in a helix. The two images are separated by whether the wave spins right or left (their "handedness"). This maintains the stereoscopic effect even if you tilt your head to either side, unlike linearly polarized systems.