Earlier quoted context omitted.
Integration is a two-way street. I've known many people born in England, France, Germany who feel excluded from education opportunities, workplace opportunities, healthcare and general civil society because of their family origin, cultural background and pure skin colour. Probably also how they speak in the UK. This issue is much less in new world countries (US, Canada, Australia, New Zealand). Let people into societ…
Integration of randomly arrived (as opposed to selectively chosen and well-educated) Muslims has proved nigh impossible everywhere in the world of "unbelievers". As far as the UK goes, Hindus and Sikhs, who look every bit as exotic and dark-skinned as Pakistanis, are on average richer than white Britons and also societally very successful. If there is some kind of "pure skin colour"-based racism at work, it somehow d…
What kind of immigrants are we talking about? What was their income, their skills, their ability to speak the local language, what jobs could they get once they arrived in the country? Answer all those questions, and depending on your answers we may find a completely integrated, successful migrant or someone who lives generally excluded from society. Skin color and religion may play a role sometimes, but they are typically far from being determinant.
For that matter, I am a dark skinned immigrant in the country I live in. I also speak the language fluently, am highly educated, and make around 3x the median local income. Of course, I never experienced racism. Change some of those social attributes, and I bet the outcome would be different.