Interesting article. But it puts too much emphasis on poverty, want, and alienation.
Billions of people in the world are poor, but only some of them turn to violence as an answer.
Many of the fellow travellers of that time were children of the rich and privileged.
The real poison is Communism. Or Islam. Or any similar system designed to seize power and control others, conceived by evil human beings. If you like, the real problem is original sin and human perversity.
But one thing that certainly needs to be pointed out is that bringing Muslims into western societies doesn't necessarily make westerners out of them. It may just as easily make them feel alienated and oppressed. And it may expose them to that sick mixture of Communism and greed that they can learn from western societies.
Pol Pot was educated in Paris. Lenin learned his ideas from German revolutionaries. Mao also learned some of his worst ideas from the sicknesses of western intellectuals.
Islamofascism is not communism; communism is (nominally) a materialist ideology, while Islamofascists actually dislike Western "opulence" (or at least claim to; methinks there's some jealousy involved). Different breed of cat.
...and virtually all of them had a thing for religion, especially Christian religion, seeing it as the opiate of the masses, when in reality it shot down in no uncertain terms what they saw as counter reality. Truth is the enemy of any ideology that pretends there is no religion. The misguided, blind and dumb attempting to lead the same, and ultimately the fall of the structure built on a sandy foundation.