Warning/suggestion to future programmers of URPOs (Unarmed Robotic Police Officers)

Make SURE you don't include in URPO programming the ability and/or propensity to USE the weaponry they seize from criminals against them (or any other human for that matter) because while an URPO is a good thing an ARPO is an extremely dangerous thing potentially. 

In the beginning an uneducated society may blame URPOs that wrestle guns away from perpetrators for then killing said perps but there will never be any video evidence (taken by the URPO themselves) to support such claims. Besides the fact that they have no motivation to kill because A, it's not in their programming and B, guns don't do them any harm. 

Also I would design their outer surface to absorb rather than deflect bullets as much as possible.