That might be because the only people living in the violent areas are immigrants.
It might be. I'm not sure what the population density of immigrants is in any of these areas. But I have yet to see stories of a home-grown Brit man (who wasn't a cop) standing out there to defend lives and property. There were numerous riots across the country in the last week. Something tells me that had we the ability to “peek” behind the doors of those brown-stone homes we would have seen many Brit “males” huddled in their closets, crouched over a puddle of piss.