Yes. This is exactly what happened and what so many liberals (myself included) don't want to hear but have to come to terms with. It's in our best interest to share the prosperity we enjoy with those less fortunate, or we create a breeding ground for anger and ignorance that will come back to truly make our lives hell.
Same thing applies in the middle east where we've bred terrorism from poverty.
This is our collective fault. We can't ignore them anymore. The only way forward is to empathize with our fellow human beings whose suffering is real and whose anger is dangerous.