If this person satisfactory sues the Police for her boy friend's death, then the award she may get should be used to pay towards the damage and cost of the riots.
Whether or not he actually fired the gun in is possession is irrelevant, if one carries a gun on the streets then one should expect to get shot.
aog, there were two parties involved in the shooting incident. If compensation were to be awarded, would that not imply the police were guilty of wrongdoing? If so, by your logic, it should be the police paying and not the partner.