The problem is an old one: how many "strangers" can a society digest? Especially in Europe with it’s internal open borders concept immigration is still a problem – and especially Britain – with it’s colonial history – has currently a hard time dealing with all the immigrants.
Britain has seen in recent years a huge influx of Polish workers – and the Asian communities (read mostly Pakistanis – like the London Bombers) have been exploding as well.
Still Europe is struggling to decide what to with all the African boat people and recent wave or Iraqi illegal immigrants crossing it’s many borders.
And there is still the Muslim question: many Europeans feel that it’s immigrated and homegrown Muslims don’t appreciate the humanistic, secular and democratic ideas on which Europe is built.
