Who is to blame for fractured Britain?

"What was bugging Mrs Duffy was that, in Rochdale, tensions between white British and those from Pakistani and Bangladeshi Muslim backgrounds had been exacerbated by an influx of asylum-seekers from Africa, Afghanistan and Iraq. As the white population contracted, immigration and high birth-rates were driving up non-white numbers: a quarter of primary school children spoke English as a foreign language, and so ghettoised were ethnic minorities that there was one primary school where not one of the 453 children spoke English as a first language. And these problems are magnified in places like Luton, Bradford and Leicester."

h/t Sanwin