I love other people commenting on what I supposedly meant. What I meant is that there's a heck of a lot of racism here like there is everywhere else but because of the city's history and well-earned reputation based on that history, when something happens here it generates more attention when, really, I doubt other cities are less racist. As for the demographics, I pointed out the relatively smaller number of blacks compared to other cities - as well as the relatively small proportion who descent from slaves in the South - more because it's an interesting nuance to the city that a lot of people aren't aware of.
The dumbest response was the suggestion that either I was somehow excusing racism, denying it or wondering naively, "Gee, Boston is awesome, why don't more of THEM want to live here?'"