I used to live in Tottenham, couple streets along from the carpet shop that went up. It's a commonly held "myth" that Tottenham is predominately Black. I lived in Northumberland Park Ward. There and in the other wards surrounding the area where the rioting occurred (i.e. Bruce Grove, Tottenham Hale and Tottenham Green), the largest ethnic group is White British and Irish. African and African Carribbean people make up 37.9% of the population in Northumberland Park sloping down to 32.9% in Tottenham Green (where Seven Sisters Tube and the Leisure Centre are.) In those 4 wards, the remainder are mixed heritage (about 5%), Asian (between 6 and 8%) and Chinese and "other" (between 3 and 5 %) This comes from Haringey Council's website here:
The further you get out from this "core" area, you find the proportion of white people increases and Black African/African Caribbean decreases. For example, nearby White Hart Lane ward is 59.7% white and only 26% African/African Caribbean.
Okay, these figures come from the 2001 Census and the picture may have changed since then. However, since that time, a higher proportion of inward migration to the area has been from other parts of Europe - Poland, Czech Republic, etc. So, if anything, I would expect the proportion of ethnically white people to have increased.
I think for people who are used to living and working in areas that most definitely are predominately white - as in like 90% white, perhaps they are more likely to notice if there are more non-white people around and perceive that the community is "predominately Black" when in fact, it is far from that.
Sorry if that's a bit of a tangent.
I think young people in general always develop and use their own words and dialect. Some of the terms enter our mainstream language and some don't. I don't think it's anything to get the panties in a bunch over.
Oh, and Starkey is an absolute tool!