Why not both? It's not like these hypothetical cops care about me any more than the muggers. If I have the opportunity to defend myself from the muggers in this

Why not both? It's not like these hypothetical cops care about me any more than the muggers. If I have the opportunity to defend myself from the muggers in this scenario or get my money back, I would do so as well. And I would be happy to ostracize anybody I know to be a mugger even if law enforcement does nothing. And build social support for more law enforcement actions against muggers. Etc.