Huge rise in immigrant population in many European countries in recent years is due to influx of refugees from areas which have been either colonies of European powers or because theatres of war have become unlivable.
Anglo-American bloc followed policy of colonialism and Imperialism against Asia, Africa and Latin America.Also,militarised Jihadism was patronised as an instrument to fight anti-Imperialist and Communist movements.
If Jihadism has become a major threat to Europe blame lies on European powers.They can not disown refugees from ex-colonies but surely,they can make Europe safer by taking a hard line against Jihadi groups and their apologists and also abandon multicultural approach which has provided space to Jihadi ideology to flourish.
Europe has become its own enemy on two counts–
1.Its Social democrats provide backhand and at times open support to neo-Jihadi groups of Kashmir and elsewhere.Labour in UK and Democrats in America are examples.
2.Left groups in Europe are supping with Jihadis