Alternatively, New York and West Oakland have different norm enforcement behavior. Of course. I notice that people are very enthusiastic about calling me out

Alternatively, New York and West Oakland have different norm enforcement behavior. Of course. I notice that people are very enthusiastic about calling me out for running across the crosswalk so the driver can get through the intersection. It's even happened to me in the Financial District. So it's alright if it's in support of harm-spreading? I think the phenomena you’re describing is not uniformly common. Of course. It's different in different times and places. I think the overall trend is a good hypothesis, however.