POGS in response to your query re friends etc. and diversity of the community where people live..not offended at all. I used to live in Sth London and neighbours included families of various faiths, with origins in all continents. I have had work colleagues from a variety of ethnic/religious backgrounds. My friends reflect the variety in the community in which I lived and they have a range of skin colour and religious heritage. I have moved to an area that has less diversity (in terms of % of population but probably similar number of individuals locally with roots in as many different countries of the world.)
My own family is multi-racial, some of my cousins are Muslim, my Sis i L is Christian /Pakistani, my grandmother was Palestinian & my dad only came to England in 1947. My mum was from NE England and I have mostly, lived in Sth London with a brief spell in E Africa and NE England! I have worked in primary schools in highly socially and racially diverse areas of South London. My DH is white British and has no particular diversity in his family but was brought up in 'working class' and racially mixed Sth London, taught in schools that had mainly non-white pupils etc etc.
Not sure how this contributes to the debate about the atrocity in Tunisia. All my friends & family, of all faiths & none, of different ethnicities to my own are outraged, shocked and saddened by acts of terrorism, racism and bigotry.