This video and article by OECD and UNHCR are recommended viewing.
OECD provides data and research on international migration including migration stocks and flows, immigrants in the labour market, integration and discrimination. Significantly, the heads of the OECD and UNHCR, at a joint high-level Conference on the integration of beneficiaries of international protection in Paris today, have called on governments to scale up their efforts to help refugees integrate and contribute to the societies and economies of Europe.
Source: OECD and UNHCR call for scaling up integration policies in favour of refugees – OECD
Across Europe, integration of further refugees is becoming a major political challenge for governments. There is strong right wing push back in Germany and most recently Sweden has announced deportation of large numbers of refugees. It is easy for the OECD and UNHCR to share their morally and theoretically correct views. But this does not take account of increasing fears with ordinary Europeans, and in particular, many women are frightened with increasing stories of rape from migrants.