Bits of Belfast are best consigned to biological weapons testing I do admit, but there are also vast swathes of it which are as nice as any of the posher parts of London, Manchester etc. It may be that protestants and catholics do not get on wonderfully at times but we have the lowest crime rates in the UK as far as I know.
Move to most other cities in the UK and its white people fighting with asian people or indeed any group fighting with anyone else who is "different" from them. I personally feel much more "at risk" when in the center of London or Manchester than I do in Belfast.
(the fact i'm carrying an M16 is irrelavant).