No you shouldn't receive any blame. The person doing something illegal should receive the blame.

You are making your life less convenient for yourself by letting your bike get stolen but you're not doing anything wrong.

I was talking about the guy who got mugged. What if he had never lived in the city.

What I was trying to say is that your hypothetical does a good job of showing why blame is not zero sum. Obviously in either case the criminal receives the same blame, but I think it is fairly clear that the victim who took drastic measures to reduce risk is less to blame than the one who did not.

The important thing to remember is that the blame of the victim, while present, has no relation to the blame of the criminal and should never be relevant in, for example, a criminal trial for the criminal. I really feel like I can't emphasis that enough.

I don't think we are talking about the same thing.

Perhaps not. I am just trying to expand upon what enraged_camel mentioned about blame not being zero sum.