Perpetrators of recent Western terror attacks have largely hailed from a small number of struggling European neighbourhoods. International expert and Globe columnist Doug Saunders has spent the last year researching approaches to building better communities. Here’s how we can avert extremism before it starts "The places where refugees succeed are in countries that turn them into regular “economic” immigrants as soon as possible, as there is no more important form of safety than leading a normal life in work, education and housing."